And how do you know if that fighter group had more detail than that?
There are two things you need to do without even going back to the skin;
First off you should post the profile,
Second you need to do some research, on colors, markings, wear patterns, construction etc...
For example, the outer wings, and I think the tail surfaces are fabric, and I think the fuselage is made of wood. These are things you would have to keep in mind when detailing those areas.