Question on what to do with a paint spill on a wing..

I was painting my 1:48 scale P-47D Razorback when I tipped my paint cup over too far. I had about a quarter sized spill right in the middle of a wing. Really frustrating. I had primed the plane with a white primer. Then I preshaded all the panel lines with black (since they were raised). I then painted the bottom grey and the top olive drab. I spilled the olive drab on the top of the wing. Although it is the spill is the same color I was painting, it ruined the preshading job. I'm a new modeler, but the preshading technique was really looking good to me. To cover the spill I had to try and wipe off the excess, which didn't work well, and then apply more olive drab. The result was a noticeable circle with no preshading.

My question is, what would be the best way to try and fix this? Strip the paint on top of the wing and start over? I don't know if it's possible to strip just a part like that. Or could I mask off the top of the wing and just apply another coat of primer of the existing paint and then preshade it again, etc., etc. Or maybe I could just try and put a light preshade over the existing olive drab inside and around the circle and then paint over it again with olive drab. I don't know if this last one will work because the other parts have a distinct lighter olive drab in between the panel lines because of the white primer underneath.

Any help and other suggestions would be appreciated.