Well, basically all that says is to make that edge straight, either by using a straight edge and x-acto knife to cut that edge straight, or use a sanding block. A good metal ruler(straight edge) is a valuable thing to have when building and repairing, and a good sanding block(preferably several) is an absolute necessity.
Otherwise, it looks like you're off to a good start. Just remember - we like pictures. Lots of pictures
I'll second that - LOTS of pictures!
edit: hahaha! Krossk beat me to it, must have posted while I was typing!
