I don't understand the use of powder "over" cloth.

We originally used powder mixed with clear dope to fill the wood grain. We would apply silk over that and just use clear dope.

That process still works well today, especially if you elect to have colored silk as part of the design.

I've said this before and I'll say it again. I use no water base anything. I don't care if there's 1000 modelers, all of who have received awards for their finishing, agree it's the best thing since chopped liver.

I use no Epoxy on my glass cloth. Just Polyester resin. Couple of thinned coats does it, Scuffing in between coats. Automotive primers after that, and some are available in aerosol cans, and so is automotive paint.

You can detail the primed surface, till your eyes pop out, or just apply paint, for those that don't have spray equipment.

I apply all my paint lightly, just enough to cover, dust it on, because I finish in automotive clear.

Here's an award winning model I scratch built in the 80's. Took best finish at the WRAM show, and it still looks as good as new!

I'll never change my winning game.