I'm currently finishing up on a Tamiya 1/48 Beaufighter and have come across something I'm not familiar with. The RAF rondel decals supplied come in 2 parts. A large blue and yellow circle with a white center, and a smaller red ball that is to placed in the center of the larger decal in the white area. I'm not sure what the best way to do this is, never having applied a decal on top of another one. Should I put a coat of gloss finish over the first decal before applying the second one on top of it? Getting the "red ball" decal directly in the center will be critical to making it look right, so Im hoping I don't run into issues with not being able to adjust the 2nd decal to get it right. I thought about masking the first decal and painting the red ball on it, but foresee trouble trying to mask it right because I won't be able to see the underlying decal when I'm applying the mask. What do you folks think is the best way to do this?
And while I'm at it, what are your thoughts on how long one should wait after applying a decal before putting a finish coat on it. I usually wait about a day to make sure that the decal is dry. But I just happened to look at the directions for decaling from an old Revell kit, and they say to wait at least 48 hours. I'm sure that factors like temperature and humidity play a part in how long one needs to wait. But two days seems like a long time to me for a decal to dry under normal conditions.