Generic butterfly

So... Right... I usually don't draw stuff like this, but hey I won't learn anything new without getting out of my comfort zone ^^. Oh and yeah it was more an shading exercise than a full drawing, so I haven't put as much effort in the symmetry and sketch as I should and it shows . Plus the right side should be a little darker . So yeah there's still a lot to learn.

Paper: A4 90g/m2

Tools:2H to 7B pencils (Koh-i-Noor) , eraser,another eraser, yet another eraser, gimp (brightness/contrast).

Time taken: aprox. 6 h