OP

Quoted from g94:

I also finished redrawing the stencils. I changed my mind on how to recreate the artwork: the cabinet is much more of a freehand-style drawing, there is no symmetry at all. Hence I meticulously followed the original drawing, without any 'corrections'. And as I consequence I returned to the head and have undone my deviations from the original artwork. It is now 100% like original as well.

Strange that printing order appears to be purple on blue background first, then white.
I would have expected the opposite, but given the nature of the drawing it makes sense.

OP

Quoted from g94:

I would definitely recommend the small-strips-approach: it's easier to heat and pull than a full size piece of mylar.

Strangely enough heating didn't work well for the thicker jet bumper mylar. But then freeze spray method worked like a charm.

The Mylar in the cracked areas breaks into small pieces. It's a slow and delicate process but the result is beyond expectation. Before-after:

Pfew. I'm half way. All mylar above the rainbow is gone. Not the glue though.

Enough fun for today