Does anyone know the name of the technique I used? I think it is maybe a magic card or hidden image card or something like that? The magazine did not show a name, just said "Color it with Markers." I used sharpies to color since copics are way overpriced. If you want shading with the sharpies, I just go over certain sections with the same color and it darkens. Go over it several times if you want more darkening....