Nice!
Some questions:
1. You said you can peel it off if you get it wrong - can you re-use it once peeled off? Will it come off easily with general play/transformation? (possibly hard to answer if you've only just done it...

)
2. Did you need to take the model apart at all? how did you manage hard-to-reach areas? Or is it best just for open, "visible" areas?
3. Does it work equally well with large areas and smaller areas?
4. How does it manage small details in the plastic?
5. I'm guessing you got it at a hobby shop or similar. If you don't mind me asking, how much did it cost? How much do you get in a pack?
The results look pretty good! I may try it out myself.