/cgl/ - Cosplay & EGL

Posted in /adv/ the other day and got crucified. cheers for being newfag. I'm trying to put together a Capsule Corp outfit Trunks costume from Dragon Ball Z. I'm on a budget of about $40, so I'm going to Goodwill later today to get some things. Might be leaving off the sword, depends on how fat my next check is. I just want to know a few things before I get started.
Are belt buckles (like seat belt buckles) hard to attach to belts? Because I can't seem to find any belts with the seat belt buckles, I feel like I'll probably end up having to make it myself.
How would I go about customizing some old boots to look close enough? What should I get to sew/glue onto the boots to look authentic (like the brown toes and such)?
Any tips (or especially pics) would be greatly appreciated. This is my first attempt to actually make my own costume. Pic related.