Welcome to the forum. As far as I know you’re the first to design with PowerPoint, cool!
Couple of things:
What machine do you have? Basic? Pro? Plus? If plus, 45 or 40 watt? (They just announced that new pluses will be 40w going forward.)
I ask because “full power” is different depending on your machine. I hesitate to offer settings without knowing which model you have.
You say it’s Baltic birch. Are you sure? Where’d you get it? One common misconception is that all birch plywood is the same, but Baltic is a different thing from generic birch ply.
The advice you’ve gotten from others has been spot on. I’ll add a couple BB pointers:
Although is usually pretty good, even BB can be inconsistent. Use this trick to spot major issues before you paint or cut:
Using masking is a great idea. @Kittski pointed you to 6” stuff, if you’re going to do a lot of BB, consider this 12” roll, it’s 65% less expensive per square foot:
As always I’ll recommend learning solid testing routines to dial in material settings. This will serve you over and over as you try new things: