We have a local guy that does this out of his home.
I asked him not to do the backside or the edges.
Keeping the edges clean allowed the pieces to fit together properly.
He plugged all the holes and just sprayed the one side.
Came out great, see pic below.

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RV-12 ELSA N470MB S/N 120470
Flying Since March 2013
1200 hours as of 05/30/2020:

VAF 2020 Donation Current