Stunning work, man. I'm doing the exact same thing with my own A-10, except I'm working out how to cover up the undersides of the wings.
I love how you brought out the panel details with a wash, and the dummy canopy markings.
I may be wrong, but shouldn't the underwing ECM pods be white or light gray?
Looks great! If these show up this year I'm gonna try and do 2 up like this. What brand decals did you use? Also, how'd you go about doing the faux canopy, did you just make a 2nd canopy mask and use that on the bottom or what?
If I remember correctly I just used 1/32 or 1/48 A-10 decals from Two Bobs and scaled them up to ~1/22 or 1/20 (I basically just eyeballed it).
I then used the paint guide to make a stencil for the fake canopy on the bottom
Hope this helps.
Phil