If you're having trouble with anatomy, perspective, proportion, etc -or if you just want to see how your own character's anatomy looks in different angles, this awesome thing I found is great. http://terawell.net/terawell/?page_id=56
Yes, the paid version kicks ass and the free version is a basic bitch, but it works good enough to utilize. It comes especially in handy for those panels with dramatic angles that you just can't get to look quite right. It's the best reference tool I've ever used and saves hours of searching on the internet for the right pose.
Note that the file name is under Terawell, the creator. (Mine disappeared from the "Recently downloaded" tab and I had to do some searching)
The program is very easy to use and only takes a simple sit-down to figure it out. Much like sims creators, you'll be distracted for hours.
Since the open/save doesn't work on free versions, I usually just go to camera mode and screenshot the specific shot I want, then take it over to Paint.net and save it. Always make sure to get a good number of different shots of the same pose before you shut down, just in casies!
Lol I sound like I'm advertising something. Seriously though, neat little gem. c:
