Thank you, people :D
Here's other builds.
It was hard work to fight with aeroplane's body.
When I fit them without glue, I saw many little gaps.
So I spend most time to remove them and It is still happening.
At least upper plate fitted well.
First problem: Some errors occured between skeleton and body's length.
Skeleton have to be shorten at least 1.5mm. And tip of the plane is tapered, So I sanded those tip.
These flates need to be reinforced. If don't it would be hard to attach each part without gap.
Rear main body is done. It looks fine to me.
Now move on to the front main body.
Second problem: Another gaps between skeleton and body again.
I'm working to lengthen skeleton
To be continued...