Originally Posted by Mangochutney
Good planning from the start makes a big difference: a costume with large details you can see from a distance and small, finicky stuff you can appreciate up-close will look more impressive and finished, so long as the costume itself is assembled with moderate skill (finished seams, competent fitting, et cetera).
This is so true. It's good to plan out everything you will need material-wise and everything you have to do to complete the costume. Without it, you could get halfway through before you realized you missed a vital point and now either have to tear everything apart or just forgo it and end up with something lacking a bit.