Mack - - it isn't that easy to just 'tack on' Little One III.
Those (expletive deleted) ground crews of the 352d FG liked to use fancy lettering on the canopy frame to put their pilot's name on the port side (what went on the starboard side?)
A quick search of the 'net for the ill-fated machine (destroyed on the ground) shows up a couple of photos, one with 13 kill markings (and they weren't just straight crosses or swastikas) and another with one line of 6?
I haven't come across a color rendition of 'Little One III' so, what color was the Little One III name? For the overall scheme, one can base it on one of the many color renditions, especially of G. Preddy's Cripes'A'Mighty.
Lastly, while the squadron code was PE, what was Don's aircraft letter?
Maybe this can be answered with a bit more searching, but just slapping "Little One III" doesn't do justice to a holder of the DFC.
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A little more searching brings:
http://www.p51.mustangsmustangs.com/survivors/images/H44-63507.jpg=====================
Rev 2.
I had a feeling it was familiar - Flight Journal has an article on four Christmas 1944 Mustang pilots, and there is one by him and a full color port profile of PE-B "Little One III"