Robert,
I like everything about the design . I would like to make a comment however, I have done screen printing for several years,, (not currently more in the past) If you print the solid red "balloon" around the plane, on a hot day it will feel like you are wearing a plastic blanket on your back. I would strongly recommend just using the red in the plane. the printer can underprint the whole airplane solid white , then the red stripes print over it, then the detail lines on that. This avoids the mass of color block which is uncomfortable on hot days,, and it cleans the design up allowing it to print on any color shirt including black or dark grey and still stand out very well. If you have any other questions or i didn't make it clear email or message me.