I can't say you did it accidentally. However you are going well. The main problem with the kind of joins on fuselage is that we cannot be sure if when sanded down the area could be of smooth surface.Therefore you have to put the putty on the joint.
Yep...taking into consideration it was painted with a brush and all decals I have had to be completed by myself... Geezz I have to make a new one. The Trumpeter kit is still waiting in my stash.
Looking good but it is not this effect you need.Sand it at the red marked area in the pic below.You have to get a smooth surface going from left to right and back of the joint.
OK. Looking very good. I'm have a day off tomorrow.So I'm at home.
Here is an example of similar sanding.But I didn't use a putty because I applied much glue to the joint instead.
In the first pic you can see the kit part and the white additions.Also the glue can be seen.
In the second pic some plastic of the addition was just sanded down but the joint and the glue can be still seen.
In the third pic it is almost done.Notice the joint and glue aren't seen.
In the fourth pic you can compare both parts one is done the second is waiting for farther working.
In the fifth pic all is done.These joints aren't seen at all.
You have do the same to the joint but you have remember about the fuselage curvature.