Chuck, I first paint the interior color on the canopy, so it shows inside. Or Interior green. Then, silver, followed by the exterior color. If you miss, the "metal" shows as wear 'n tear. Also, you avoid the "see thru" look you sometimes see on only partially painted canopies.
I also try to use acrylics for canopies, easier to remove if you commit a faux pas. Or get the twitch.

Thanks Rob, built many a Monogram back in grade school and early teen years, but never did a Devastator until now. Kind of wonder why as I wasn't particular back then, though I am not that particular now.

A quick update. Finished off the prop hand painting the red/yellow/blue warning stripes on the tips of the blades. Next pre-shade the outer wing panels. Then installed the landing gear struts as they will be the same color as the lower wing when I get down to airbrushing the under surfaces. More to follow.

3 attached images. Click to enlarge.

Now that the P-38 is pretty much completed, time to concentrate more on the Devastator and Vindicator, getting to the nitty gritty. With the landing gear installed, next is to finish the interior and to install the canopies. This will be an interesting process. First install the windscreen. I gave up in trying to mask the inside framing. So I will just do the normal masking of the outer panels. Next the rollover bar and mount it behind the pilots armor plate. The fire extinguisher was painted Gold. I didn't have brass, so Gold was a nice substitute. Next the gunners seat was placed carefully into the ring. I will configure this with open canopies. So next was to install the rear section which slides under the main clear portion of the canopy. When I built the Dauntless I can't remember how I did that process in painting it. For the Devastator I will do it in sections. First before I install the next glass section, I am going to paint the rear sliding glass. Starting with the Interior Green. Of course first I will mask the windscreen and rear slider with the Montex canopy mask set. Really easy to use. Also really cool is they provided the masks for the wheels. And that ends this portion. More to follow.

13 attached images. Click to enlarge.

You have no idea, my eyes were about to be permanently cross eyed placing the masks on each of those panels.

I used bare metal foil on my canopy frames, but my plane was a "Yellow Wings" build. I didn't have to mess with canopy masking which is very tedious.
Your TBD looks great my friend. You're making some good progress.

So far the masks have performed well. After removing them from the rear slider, no residue on the glazings. So far so good. Now to install the rest of the canopy and mask them off. Monogram was good in allowing the canopies to stack and slide in the open configuration. The parts fit without any issues. Unlike the Vindicator which will need some adjustments to get them to fit. I used white glue to attach the sliding glass for the pilot to allow for painting. After adding the masks time to paint the interior green over the framing. More to follow.

15 attached images. Click to enlarge.