how did you go about doing the scales if you don't mind sharing
Powder paint the base coat pearl white, let it cool just a bit and fold a small piece of nylon/plastic screen around the head and tap a small paint brush with powder paint over the screen. The powder will be fairly loose after you pull the screen off. Just reheat the head to melt the paint, flip the head and repeat. Tap the paint brush with the color on the top of the head to give it the solid color on the back.
Be sure you don't have the head too hot or the screen will melt to it. I bought the screen at Walmart in the hardware dept for $8 for a roll that will take a month of Sundays to use up.
Glad to share and I hope this works for ya. It may take a head or two to figure it out but it's still fun.