Just go slow. Make all your cuts nice a straight. Before you even begin with this project you should ask yourself. Do you have little kids running around wearing just socks? If so, you may not want to install laminate on your stairs. No doubt about it looks nice as can be. But is very slippery, to say the least.
OK, for the big bucks. The stair nosing that I used in this video was not cheap at all. When you go to buy the laminate floor of your choice ask them if they have “matching” stair nosing. Very important, you’ll be surprised by how many manufacturers don’t.