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Wow man, even over the last month the amount of improvement is astonishing. I can see you being a leader in your field one day if you keep this up.
That being said, I think you should balance out this sort of stuff with life-drawings, especially environments from life. Not from pictures, but from actually being there. Even if it's just outside your house/apartment/whatever.
Keep up the awesome work!!
ok an update
these are some old practices from imagination during a boring history lesson
damit sorry that you have to turn your head :/ ill be careful next time i take photos
and back to my little a5 sketchbook
the dagger scythe thing is really inspired from issue 85 of imaginefx with the WoW style of weapons.
Hey man, you've got some awesome enviros in here. I also really like the anatomy studies, the bones/legs/arms are looking great. The sniper rifle is nice too, only thing I'd say with that is you may have gone overboard with the circular cutouts, it looks a little bit too spiky/busy to me.