Drop the sharp, shiny objects and step away from the mirror. It takes a few months for everything to fill in, but you're off to a great start.

I botched my neck line in hideous fashion twice early on. I also have a cowlick right on the line which makes it impossible to do it straight without later appearing to have a big chunk of hair missing. You'll get the hang of it. Just step back for a week or so, then adjust if you think it's necessary.