RRBaron:
Here is an example of an Airfix Hurricane I did last year for the BoB GB. Hopefully it will illustrate what you can do, but I didn't have a good camera back then.
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I masked the canopy with narrow strips of tape, cut from regular old masking tape. They need to be very narrow. Then you "box in" each window panel, leaving the frame uncovered. I use liquid Micro Mask to fill in the clear area, but sometimes you can do the same thing with tiny, square pieces of masking tape. That takes longer and is tedious, but either process can be boooorrring.
For the camouflage, I use masks made from masking tape. If you go over to the Spitfire group build, I posted photos using the same type masks that I did on the Hurricane along with an explanation for how to use them (except of course I used Hurricane masks for the Hurricane). I'm no good at free handing camouflage with an airbrush, especially not in 1/72.
I did a Google search through the web for 1/72 Hurricane masks at that time and came up with several pictures of masks various people had created. You might find some that way. Alternatively, I can look through my stuff I saved on CD roms, and see if I still have the masks I used. Only thing is, I have to be out of town on my job till Friday, and won't be able to do much till then.
Anyway, this gives you some ideas, I hope.