First, I created a page of decals - mostly the black circles that go around the new inserts - and printed it on special waterslide decal paper. It's the same thing you get in a model plane kit - just cut out the decal you want, soak it in water for a minute, place it where you want it, and gently slide the backing paper away, leaving the thin, clear printed film in place. Then I brushed some setting solution over top of it to smooth it out and help with adhesion.
I started with the bonus inserts in the middle of the playfield. Here, you can see that I've decalled the top four.
Here are the top rollovers mid-process, with the right one done and the other two ready to go. It's a dramatic difference.
These are the two Special Scoring inserts on the left.
The decals by the roto target needed to include custom type.
The 1000 bonus tag was tricky and it took a few attempts to get it placed correctly.
Voila! Looking great!