Studies and sketches dump

If I can I do at least one quick sketch a day. I generally take about 15-30 minutes for these. I have a ton of these lying around doing nothing so I thought it would be nice to gather a bunch and put em in a post. This is a big mix of a studies, original sketches and anything in between. Therefore I'm not claiming any of these is completely original. I pick a lot from pictures I like but I never really note down where the ideas came from or what I borrowed. Hope they're interesting to you