That helps a lot, thanks alspal ~_~. (3 is still a little small, but then again, I use a gigantic resolution, so that's my fault)
EDIT: I encountered a glitch. On the fourth level (I think it was the fourth), where you have to jump down, and there's a mushroom and a worm/snake thing, I jumped down, and landed on the mushroom (I could see the worm). The mushroom sent me back in the air, and when I came back down, I saw the snake walking on air to the left, where that little pit was. I went over there, and it was gone, completely.