Hey guys,
I'm havin' a little bit of trouble lately with my drawing skills.
I'm a decent artist, but since going to college I really have a huge problem with 'Practicing' outside of college. Mainly because I'm overworking my sketches when I try use my sketchbook.
How can I improve outside of college? I do alot of life drawing with nude models in college, so ref. sites feel very.. 'flat' to me.

Any advice or guidance would be greatly appreciated .