Thank you very much Adimu! I use GIMP. First I use a 2 pixel brush to go around the main shapes (I scan in drawings!) and then on a new layer I use a 1 pixel brush to get fur texture. I then delete the other layer. Next I add shading in 3 or 4 layers using the colour black and using the smudge tool to get it to an effect I like. Then I colour the picture on a new layer before locking the Alpha channels on the shading and the lines and colouring them in in brown. Hope this helps!
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