Designing characters doesn't always mean drawing them
I've been designing characters by customizing and remodeling old action figures for a while now. It seemed to come naturally for me since I collect toys and figures anyway. I'll sit at my desk and just look at a toy, watching the light and shadows fall across the sculpt as I move it under my desk lamp. Here's a group shot of some characters in one of my current projects. I know it's not the your typical way to design characters for comics, but you might want to give it a try!