I did alot of research before I did my Euro mount. The one thing most taxidermists said was to NEVER bleach a skull. Bleaching a skull is bad for it, and too much bleaching can turn it powdery and flaky.
To get it nice and white, I'd soak it in a hydrogen peroxide solution (20% solution from a beauty supply shop is best. You can use the 3% stuff from Walmart but it takes longer to work).
Place the skull in the peroxide, keeping the antlers out of it. Wet paper towels with the peroxide solution and lay them over the top of the skull. Keep the paper towel wet.
For the antlers, I'd use regular wood stain at the bases to give them that dark look. Or you can buy antler stain from a taxidermist. Wood stain works fine though.
If you are totally lazy like me, you can just spray paint it with a low gloss textured white paint. I did this on mine and it turned out fine. The textured surface looked very "bony" and natural.
