fixing mistakes

Hi,

Some days you make mistake after mistake. Today I finished making a coat rack from Walnut. It’s just a bevelled board with some aluminium hooks. Nothing fancy. Pictures will come later.

I decided to drill 6 holes for this 3’4″ (3 foot and 4 inches if the notation is right) board. Two at each end and 2 in the middle. First mistake: I bored 1 hole in the wrong place. Missed the mark so to speak. Because of this the 2 holes did not align. Annoying.
When mounting the coat rack to the wall I noticed that it was enough to use 4 screws instead of 6. So the middle holes where unnecessary, mistake 2.
I made some plugs and when tapping them in, I forgot to watch the grain. Mistake 3.
I had to remove them but that didn’t go well. I had to drill them out. Of course when done I realized I could have tapped them out from the back. Sort of mistake 4.
Finally I used a flush cutting saw to remove the exposed plug and made some ugly scratches, mistake 5.

I finished this coat rack with 2 coats of sanding sealer, 3 coats of waterborne varnish an 1 coat of wax. Now I have to plane the surface again to remove the scratches en to smooth out the plugs. I guess that means I have to redo the finish, starting with the shellac. Am I right? Or can I scrape locally and apply the finish only to part of the board?

Long story.