Well, this might explain some of the problem. 
I submitted 3 versions of the same skin, two different squadrons but essentially the same skin except for the numbers / squadron designation, and nose art. 
They accepted only one. Happily, my favorite.  
Bottom line, of the 3, one was a backup with no nose art per Skuzzy's suggestion and on the other two, I only changed the nose art and plane numbers. They accepted one, the one with the most risqué nose art, 

 and rejected the 9-0-9 and the identical plane without any nose art, as being identical. 
I'm happy, and I can still modify the 9-0-9 to resubmit... if I can find the time now.