Kenny, this is the way I do it.
1. Make sure the surface of your model is as smooth as possible. I use a gloss coat on the area the decal is going to be applied.
2. Trim the clear carrier on the decal close to the number or letters as possible.
3. Put the decal in a bowl of water. I use warm water as it works a little faster. When it's wet the decal will slide off the carrier (paper backing) easily, don't force it or it will tear. If you leave it in the water for a longer period the decal will float off the carrier.
4. If the decal is still on the carrier, slide it off to the spot you wish it to be. If the decal is off the carrier in the water, I use tweezers to pick it up and lay it down on the model. You can reposition the the decal (I usually use a paint brush for this) by just putting a drop of water on it and slide it to the exact position you wish it. I use a paint brush to wick off any extra water when the decal is in position.
5. If you've found it's in the wrong position, you can still go back and repeat the steps by putting on another drop of water and moving the decal around.
6. After you have finished applying all the decals (make sure you didn't touch any of them and move or remove them) set the model aside to dry.
7. After it's dry, you may find the decals didn't pull into some tight places. Put some Solvaset or Micro Sol on the decal and let it dry. The decal should pull down to any surface. You may have to repeat this step a couple of times to make it pull tight.
8. When everything is dry and it looks the way you are happy with, coat it with matt flat (if the ship is flat). Let it set and you're done. When it's done right you won't be able to see any of the clear carrier edges. Good luck, hope this helps.
