Good job, but there are a few things you should change if you ever try something like this again.
First the damn knife keeps getting in the way, this makes it difficult to judge how close you are to a line's edge and makes it aggravating to lose a life because it feels more like the games fault than your own. Second of all the under clothes are obvious padding to the game, I mean seriously two pairs of panties? This ties into the third point, considering how easy it is to access porn on the internet this game really shouldn't have more than 10 levels, after the around the tenth level the knife had usually cost me most of my lives and I began to feel like this really wasn't worth the effort.
Aside from those three points this was well put together and this is just one random joe's opinion.