yeah like everyone says, dont stress about the first cuts, just mark a line then cut a little before it to give yourself some wiggle room then trim back to the line if everything still looks ok. easy to take material away a little harder to put it back but even that can be overcome if need be. as you go your confidence will grow too. then before you know it, your done. and you will be wondering what all the fuss is about. we are here if you need us.