Well, I don't have the decals you mentioned but I suspect they are a bit off.
I would suggest getting Eagle Cals #42:
http://www.eagle-editions.com/decal42.htm
Take a look at this model which i beleive is very close to the original:
http://modelhangar.virtualave.net/Bf109G6carganico.htm
(although the colour of Mickey's clothing is open to discussion).
Kjetil