I'm making my daughter a cradle for her future baby, and the problem I am running into is that the plans I ordered show the layout of the wood, but not the measurements fot the miter or bevel cuts. I am no math wiz and it's been a very long time since I've used a protractor. But it looks like a 68 degree bevel cut for the hood pieces. How do I cut this bevel on a 45 degree limit miter saw?