I'm not a profesional or anything but I find it helps me a lot if I print the picture out, trace everything I woulf put on my piece of paper (outline, different areas of shading, different colors, etc) then i slowly begin to draw the outline, trying to mimis every line, the i move onto placement of the eyes, nostrils, mouth, and ears (if I'm only doing a head) then i begin to draw the places where the shading should go. Then, finally, i start to fill it out, starting with the dark parts first. Btw, i draw in black and white. Maybe I could post some pictures when i'm off of my ipod. But, your pictures do look great!
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