Thanks Hugh and Evan.
The first stage of painting has now been done, and Evan very kindly sent me the camouflage pattern profiles from his kit, which will make life easier (my kits are for RNZAF aircraft).
The cockpit area roof was sprayed in matt white enamel, and masked when dry. I didn't bother with a primer coat, as the paint seemed to cover well enough without one, although the white needed "building up" with a couple of coats.
The mid stone was to be sprayed over the entire upper surfaces, and this had to be mixed, as I was unable to find the correct shade, which appears to now be discontinued in the Humbrol enamels range.
The first mix, using Humbrol No.63 Sand, a touch of white and some yellow, seemed a little to pale when tested on a "hack", and then I knocked over the plastic shot glass the paint was mixed in losing the lot !
A second mix was prepared, using more yellow this time, which looked better, but then I had an airbrush problem, with the larger 0.4mm nozzle getting blocked. Spent an hour cleaning and testing, then gave up and reverted to the fine, 0.2mm nozzle, which worked fine and actually gave more control, rather than almost flooding some areas.
I'll let the paint fully dry, then mark the camouflage pattern in pencil, and spray the Dark Earth freehand. Once that's done, then it's more masking and spray the black undersides, mask and paint the de-icer boots, then remove all masks, gloss coat and decals.
If things go to plan, I'll just about make the delivery deadline, which is Friday of next week, just in time for the 46Sqn Association dinner the following day !
Pics below show how things look so far.