My technique for getting a glossy finish involves tons of clear coat and sanding back then repeating that until I run out of cans of clear. Wasteful and expensive and it takes weeks but it works.
Follow Sonic's advice instead.
As far as your colour mixing goes... jealousy is my first response. It's the purple I was trying to achieve myself on a 6-string bass build although it didn't come even close to what yours is. The head looks particularly sweet with that grain pattern.