It's all preference. I prefer to have my skin ready in towel in the fridge, the night before the mount. I will have all the holes stitched up where caulk can leak (head, neck, breast, wings, and larger dime-sized holes). The next morning I borax, dry with air compressor. Run wires, and mount bird. I like a fresh skin. I never dry the head and most of the neck until detail work like inserting the head. Basically last thing I do. An air compressor is an amazing tool for many reasons.