Step 5.
Now take your over reduced root beer candy and airbrush around the blue, let the root beer go well into the blue to help pull back the blue color around the edges, this will let the root beer blend better in with the blue.
Step 6.
Again, rub it down with the magic eraser
Step 7.
Spray some black back in so that there is a "soot" over some of the color again, this will actually richen the color a little and add some depth to it.
Step 8.
Clear coat with a satin clear (not flat, not gloss) and sit back and enjoy your efforts