Even if the thread's labeled as "Entries" seems that comments are appreciated, so here I go, ready to share what comes to mind when looking to this door.
"We don't sell potions of happyness to children and dermorians!"
Mmm... I'll refrain from saying what first came to mind when reading this ^^ but... isn't the use of "and" in a sentence that has "don't" a bit confusing? Oh... now that I notice it... it's the Herbalists Guild door... Hands too focused on picking up flowers and grass... left almost no room to put on them some written expression abilities.
[Wired, wired... you'll have to pay your guilt for that message!

]
Now the real comments:

Wood: Good looking, on average I like it a lot. The door looks solid, and I think it adds to it the wood texture as well as the fact that you've used few planks of wood to build it. It is very well thought, as of its structure, for instance the place where the title of the guild is put, is perfectly shaped on the door, giving it relevance, and also appears as a solid plank, that adds more power to the message. One comment only about it, very very picky. But specially noticeable in the upper right wooden block. The seams. It's that the word? I'll assume it is... well, the tree grows in concentric circles, notice that that (almost square) block seems to be made of solid wood. If that's true on its lower part, there should be only one seam mark. Notice how the lateral view does the trick, and, on the left upper part, since the block is rotated, the seams are too, so what you see from the perspective shown, almost does the trick too (meaning that it goes unnoticed, while, at the right part it is noticeable)
Metal: Already discussed. The white dots add an odd effect to the view. The metal appears as painted in black. If that is true, you shouldn't worry too much about its aspect. In that case, the metal would look completely black, and there's no shadows in it nor any feeling of detail. If only, you could have played with "dust" effects or zones where the paint fell, but if the Herbalists take care of their outern appearance, and keep the metal always painted in black, then I bet for no shadows at all, and no little details to be percieved at all... and yes, that might be a flaw point, since perhaps it would look too artificial. The suggestion of using (almost) colours, seems the one to follow.
Drawings: I've to admit they add a colour and freshness to the door that, if it did not have it, perhaps it would look as a non relevant door. But, then again, does it have to be? I don't know if the Herbalists guild would like to have those drawings on their main door, true, they do show flowers and grass (their main motive for their job) but the analogy between the drawings and the children referred to in the note is too strong. Are the little ones in Hydlaa being slightly evil and decorating the door?

Obviously not, since the drawings are smartly placed on the door. Respectful with the door itself, so to say. Still the childish drawing feeling persists, it adds freshness to the door, yes, but at the same time it would transmit lack of seriousness for the profession, and since this is a door for a guild house, I guess appearances have to be kept, and, currently, one feels like, if the door was opened, a couple of gnomes one above the other would be in the room making malabars, while a yulbar tries to keep equilibrium on a baloon behind them, just on the doorway that leads upstairs.
Rocks/stone: It has been commented already (hey, that shows I arrived late

) and I've nothing more to say regarding the rocky blocks at the bottom. I've, although, something to add to the lateral parts. Why do they look odd? I'd say because that structure is more seen on floors, than on walls. The kind of little pebbles used for the lateralls, embedded in that grey mass (kind of a cement) ressembles very much the pebbles one can find on the rivers. They're shaped round and smooth due to the water flowing. That is the kind of rock you used. Personally, I would not remove that dark sorrounding that ArcaneFalcon mentioned, I think the texture itself looks really great, but not fitting to a doorway. For the floor, I'd see it fit. Perhaps it's a matter of getting used to it, but I expected a more solid rock to be used in there, kind of those that had to be extracted and worked on with a hammer and a chisel. You'd have even made the structure that holds the moss chiseled (?) if you had used that rock form I mention. It would add to solidness of the door. See how, currently, the door itself looks more robust than its doorway.
Moss: Glowing moss you said? I think it's time someone measures radiation on Yliakum then... seems that Herbalists are playing with uranium

No comments about it except that it looks a bit too plain and without volume, specially at the upper part of the cone (the wider one) The use of that moss, though, together with the already mentioned choose of rocks, gives the doorway itself a feeling of "Christmas" tree, that adds to the sensation of being in "Wonderland". If you open the door now, there are cards running here and there, and a fat queen behind them.
The note: The texture looks correct, and, somehow, I liked the text ;P But I'd like to comment you one thing. Its placement. Unfortunately, it's too clear that it was you (texturer of the door) the one that decided where to put the note, and its size. See how it perfectly fits the central bar, and how it doesn't touch (or barely at the right) the metallic parts of the door. Just as if you did not want it to hide any detail you worked in. Well, that gives the note a feeling of non credibility. You've to try to think how that note was put there. Probably they were a bit angered at some demands, and one just opened the door, and plugged the note on it. It is a door that the one that put the sign, had seen millions of times, so he/she would not bother that much about its size or if it hides or not any detail of the door. Hell! Those kids are angering me, let's see if they know to read this! and plaf! the note is put.
I think this is all that came to mind. ^^
That said, I must say again, that the average look is nice, and that I'm very glad to see your evolutions in this learning you decided to start. The textures on themselves are great and of high quality, and the artistic touch you have is evident, I'm not talking about the texture quality, but more about the idea on how to make the door look like, the chosing of the type of letters, and lots of other details. I do not know what you meant with that pixel by pixel thing... (but I'll make sure I'll end knowing about that

) but it's clear that you put lot of effort into your works, by the little details they all have, and the delicate touch you put on them. It's not only clear that you enjoyed the process, but you also wished others to enjoy the result. You can count me as one of your espectators.

And I'm more than glad to return to you a little part of the time you put to bring this to us, in form of feedback.
If something else comes to mind, I'll be sure you know about it Wired.