Hey man, Im liking how your studies are developing. Keep at it and trying to learn how things work ^^ itll pay off and I can see your shapes getting tighter. One thing I advise for story boarding is to have a play around with perspective. Loomis is also great for placing figures in a scene accuratley and it will help you balance composition alot more.
Id really like to see you do more sketch renderings, seriously they are coming along nicley and I can see your strengths being brought out by it.