Thank you all for the kind comments.
@ Christopher; I didn't print the letters and numbers myself. For the RNZAF one I used the decals from Oldmodels Decals, the original kit and some spare one's. For the letters N and Z I have used the bottum end of the 2. Slide them together and there you go. So I just cut the decals. For the right result I even put decals or parts of it on top of each other. And if I can paint it then I won't use the decal. Hope this helps.