Really felt like coloring that bulging snake. There was a lot of empty space. So text for sound effects! I may or may not like the way those text effects turned out. In a way I like them, in a way I don't. Its 50/50.
Over all VERY good image. The bulge is wonderfully detailed(although i think her nipples, face, etc could be showing but thats just my opinion, not truly necessary). Judging by the "Mmmf!" and "wiggle" text the woman doesnt want be there. If that is the case then I think that her body should be more contorted. Like her head twisted back, a leg bent and a leg kicking, her breasts and stomach pressed up from her stretching and arching of her back, and her arms attempting to flail about. Agian, a VERY good pick, love to see more, keep it up! Only a few minor tweaks to make. Live well!