holy shit, its gonna be a rough 15 min of typing. i usually always point the negative sides, but i guess you're a nice fella anyway.
,and, are you rich or gifted? i only received my first sketchbook one week ago, and i didnt used it yet. sketchbookes, despite their names, should be used for serious use, so feel free to erase everything you didnt drawed correctly. the maximum of time you should allow yourself is 3 hours.
to begin with, you'd need to work your shading, in the first picture her hairs seems to be highleted from everywhere, but they dont have a texture either. imagine the hairs as a 3d structure, it'll make it easier. when you're shading, stop doing it with your esthetical side, try to use some logics and convert your drawing in a 3d figure, and guess where there would be shadows ( ie: axe making a drop shadow on legs, or skirt making a shadow near the vaginal area )
in the same drawing, you've put her knuckles in evidence. You're an artist, and you do know that the human have knuckles, but you gotta ask yourself if they're really that apparant: if you take a look at your hands, do you see huge valleys caused by your knuckles? Probably not, you know they are there, but try to vizualize how they look like covered in skin.
A method i use is to avoid pure white, unless there is highlights. If you take a picture of yourself and convert it to greyscale, you will notice almost nothing is white. mastery of shades of grey would help.
The bones where ends her neck ( i dont know the english name of these two bones starting under to the neck ending to the arms ) is another good example of a bad mastery of shades of grey. Not to cry about you, but you could've avoided such a thing by either having used less pressure, or applying correct shades of grey.
The boots are horrible, despite the amount of time and efforts you might've spent, but metal is tricky to get right.
the second pic have nothing wrong with perspective, i highly doubt perspective would've been nescesarry to be applied here. her arms are extremly huge and very long.
everything under her nose is extremly crowded. erase the face and redo it.
third one seems painful. oh and make her arms thinner. two persons of different sexs with the same training wont receive the same physical changes. oh well, anyway, i dont see those hulking arms appropriate unless she lifts a lot of weights.
the first drawing was the only one with acceptable muscles, yet you should get rid of these bumps she have.
fourth one will be left to yourself, try to figure whats wrong with his hand, erase it and redraw it.
fifth one is interesting..i had to do
armor "studies" too.. its best used when you have reference pics.
