|It's always a good idea to read the directions through at least once before making a new pattern. Okay, this sounds obvious, but every once in a while the obvious escapes me.
This one caught me today when I was making a purse. I didn't bother to read the directions ("Hey, I'm an 'advanced' sewer, so I don't need no stinking directions!"), and because of that, I left out one crucial step! Fortunately, I realized it quickly, went back and checked the directions and fixed my mistake. Two lessons that I took away from this: 1 - read the directions (hence this tip :) ), and 2 - don't get cocky!