i'am trying a new approach with a more solid 3D base. Followed some of Eytan Zana technics following his "Advanced Sketching with 3D". Also a HUGE thanks to Pablo Dominguez for his incredible feedbacks !!!
I never had so much fun creating an image. More to come soon !
Model made in 3d coat, render in blender then photoshop
Here is the raw render + shadow / AO for the curious smiley