Hi there
Time to die -^^v
Your stuff reminds me of my own art few years ago,
well theres some general tips id like to give ya and one is realy important to me :
don\'t use photoshop ,I know this sounds hard but if you realy want to use it get an artpad, and if youre using it forget all those efects its the most worse thing you can do, it will just damage your art, please trust me in this point.
Another thing is drawing means understanding, without knowlege you wont be able to draw any better, so try to draw a lot from life, if you wana become better at human shaped bodies sketch humans from life, attend life drawing classes, which are great fun by the way, there is no other way to get rid of those problems, i realized this 2 years ago, dont make the same mistake...
well theres the kylros or however this thing is spelled

there are quiet a lot issues so I just sketchet some baisic shapes over the whole thing, there are alot possible poses ive choose this one considering the arm with the sabre it might look this way.
The major change was twistiting the torso slightly in order to get the arm in the right position,
The legs are to short usualy 1/2 of the body
To get smoe authentic folds you need to know where the legs are, even guys like Da Vinci or Michelangelo sketched their figures naked bevore they dressed them up,
Dont focus that much on the out line, try to imagine youre sketching something with volume, there is no outline in rl anyway...
As I said your art is very similar to my stuff those days, I ve a Mentor who thought me alot about art an is still, and thats prity the same thing he told me 2 years ago ^^
I hope this will help ya, If theres something that might offend you - it wasnt meant that way
keep drawing