Are you talking about the big head in the middle? the girl to the left of it is from Yamatogawa's Tayu Tayu, the little scene to the right of the head is from Kisaragi Gunma's Giri Giri Sisters.
I've seen her somewhere... let me check through my archives.
Coco-tan wrote...
Why don't you look in the Manga part of the forum?
I kinda see your point as he is talking about a specific manga but this is general so it should be fine. Plus this section probably gets more hits.
edit: I think its from the doujin Honey Blonde by Kensoh Ogawa