Looks great! At least if you missed a few nails, your guests dont have far to fall =)
I love the wide staircase!
I put wide stairs on both the front and back for a couple of reasons. One, I've moved too much furniture in my life. The wide stairs make that much easier. The other reason (and it really just hit me this year) is that when we are older, we can put a ramp up to either staircase and still have steps to the one side for those who want to use them.