If this was my model, I would lightly spray a little paint over some of the chipping you have on it now. Use a combination of the Amber Gray and the Green for the colors. I would do the painting mainly on the fuselage, and leave the wings and wing roots as they are. Then I would add some chipping on the leading edges of the wings. I would also take a toothpick and add some scratches on the ammunition covers and some of the access panels on the top side of the wing.
As far as the colors go, I think it looks as it should. You have this part looking great, to my eyes anyhow.
If you look at this picture, you can see how they didn't add Green around the canopy frames. Instead they left them in the original color. Likely they didn't have the time or the resources to mask the canopy.
But in the end, it's your plane... so paint it how you like. I have around 5 different Zero kits started on the table right now. One will be completed like the one in the picture I just posted.