Quite simple, Chris. I gave them a VERY thorough soaking in HOT water, holding the edge of the backing paper with a pair of tweezers. I applied a coat of MicroSet to the surface of the model, where I was going to place the decal. I then held the edge of the decal near the position I wanted it, sliding it on with the flat of my thumb. Note: VERY gentle pressure is needed here, don't force the decal off the backing paper. It takes a little while to rise off the paper. Once the decal was placed on the model in the approximate position, I used a large flat brush dipped in MicroSet to coax the decal into it's exact position. A brush of MicroSet around the edges of the decal helped it snuggle over the bumps and into panel lines.
Yes, they're very thin, delicate decals, however they're great decals if treated right. Main points are lots of water to get them off the paper (when you think they're ready to come off, place your thumb lightly on them and slide it. If they don't shift instantly, more soaking time is needed.), some sort of decal solvent on the surface and a VERY gentle hand in exact placement. That's why I prefer to use a brush.
Hope that helps, tell me when/ if you try them next.
Cheers,
John
P.S. I'm working on a livery for the 'Aus-10'. Because it's ground attack, it'll be a green/tan/black 'AusCam' job, a bit like the Nomad was painted.