Interesting technique. Just trying to get my head around it just now. You just use the caulk for the gaps and tidy things up a bit then? In your example it was just on the faceplate, then the PVA went over everything and gives the whole thing more of a seal?several steps
(1) with experience you learn to glue your armour pieces together better
(2) to fill holes and gaps - I used acyrlic caulk. NOT silicone. Its the stuff decorators use
acrylic caulk applied and smoothed with fingers and a touch of water (its not an exact science)
like all filling - thin layers often, rather than a big dollop of the stuff.
It will take some light sanding too
These are just standard car spray paints then? The kind you can pick up at hardware store etc? How many coats/cans did you require for your full suit? These coat fine over the PVA layers in your experience then? I'd been concerned that the solvent might have interacted with it somewhat and had an adverse effect.paint I use with car rattle cans.
I tend coat in plastidip at the end - either gloss or smoke depending on the effect I want.
this tends to add a flexible covering over your paint reducing cracking of the paint job
I have used Wood Filler, Car Filler, Spot Filler and Generic Filler and they all pretty much do the same thing. The difference is the sand-ability, the dry time and the cure thickness (how thick a coat you apply before it fails to cure correctly).