Today i've been practicing for 9 hours drawing 3d shapes (rectangles, circles, octagons, you name it). I have an awesome teacher which I all suggest you check out because hes amazing at drawing & painting and his style makes much more sense then the whole "lets draw these lines over and over and not understand them so I can draw people/things and such!" His Twitch:
http://www.twitch.tv/p00se2. Anyways, I can already see a large improvement. I did a 2d concept to 3d Sci Fi Turret concept to see how much progress I made (a lot).
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