Lately I don't even use line art, just start with a blob (mostly with faces, I need some direction with anything below the neck) When I did use line art it was pretty minimal as I'm always anxious to get to the fun part :) Plus, I'm not good with movement. That pic you did with James on the back of Sirius' motorbike, his hands reaching out for flight...that is incredible movement. Makes me feel the wind.