The roundels were pretty small at 3/8" diameter or less, and rather hard to cut out by hand, so I made some punches out of appropriately sized brass tube. Punching them out wasn't too hard, though a little of the white paper was exposed on some of the decals. It is most noticeable around the red on the Mugabian roundels.
Below is a Mugabian Mig21:
The instructions said to use a plain paper/normal setting, but I suspect that the red would have turned out better with a better print quality setting. So I'll give that a try next time. All of the aircraft are a work in progress, so some detailing still needs to be done. I just figured I show some examples of home made decals.
Next is a Uwandan Fiat G91:
And lastly is the QRF Strikemaster:
I know the Strikemaster has a couple blemishes in the fuselage casting, but with some automotive glazing putty, and a wet-sanding stick, it took about 20 minutes to clean up, and I think makes a really nice model. I've got two of the little beasts, and I love them.
The printer that I printed on was an old, bottom of the line Epson CX3810, proving that home made decals can be done on a junk printer, and work reasonably well, without too much trouble.