Knock

Heya, I'm a bit new to modding Minecraft, and I'm trying to find a way to rescale the player model to a different size. From what I understand, the best way to go about this would be to use preRenderCallback and GL11.glScalef to do so, but I'm hitting a bit of a wall, I think. I'm not asking for a code handout or anything like that, but if anyone could confirm or deny my suspicions and maybe toss me a hint or two on how to best achieve this, I'd greatly appreciate it. Thank you!