Spray paint problems

[WiNgNuTz]

Im trying to tidy my boot badge up a bit, as it was proper ropey to start with, and i rubbed it down and sprayed it China blue to match my old car (some of you MAY remember the thread i posted about it). China blue was looking a bit rough on the Diablo, so off it came again to receive a new coat of paint. Ive also sprayed the lion gloss black, but you cant see that in the pic. Im having an issue with the paint "crazing" or cracking as its drying. Its going on fine, im not doing anything different to how id usually spray, but never had this problem before.

Heres the pic to explain:



The badge was giving a good rubbing down with 80 grit sandpaper to start with to remove the majority of the old paint, then worked my way up to 600, didnt see the point of going much finer than that as its only a small boot badge, a few imperfections i can live with, but THIS?! hock:

Any help will be repped.......oh wait, guess itll just be appreciated then.