The Canadian Warplane Heritage Dakota (when I last saw it) had two different aircraft liveries, port and starboard. In this scheme, port side is KN456 'Z' from 436 squadron, starboard is KN563 from 436 sqn. In this scheme, the small letter Z is repeated in a larger size behind the wing, but an earlier iteration of the warbird did not have the larger letter, and this is not provided in the decal set.
While the decal set calls for an azure blue underside (which would have looked nice, I chose to go with Medium Sea Gray, as the CWH plane has this colour.
The decal set didn't provide serial numbers, had to scrounge those from a Beaufort set.
This image shows an earlier paint scheme for the CWH plane, with just the small z on the nose. But I could swear that's a black underside!
1 attached image. Click to enlarge.