Good advice. I'll add, if you're spraying a glass bow, and filling the wood grain first thing, reagardless of whether you're using sealer or the actual finish, there's no need to spray it on the glass, since it is already perfectly smooth. Doing so simply wastes finish and risks getting dust or dirt particles in the finish that will need sanded out. So, tape off the glass and just fill the grain of the riser and edges of the limbs. Remove the tape when the grain is filled and sanded, and continue.