Crown molding is a B___ until you get into a routine. There are lots of good tutorials but here is a couple of things that are worth considering.

-Get an angle finder that shows the angle and the angle/2. Yes, it's simple math but anything that reduces the chance of error helps once you are deep into it.

Take the time to build a seperate jig for both the left and right cuts at the table saw. You can buy them but they are easy to make from left over scraps.

My alogies for the big picture.

With great power comes Awesome irresponsibility.