You can use thin CA glue to hold the assembly together step by step.
Soak the CA glue into the tab joints, use a weight to hold it in position.
When you are happy that the fuselage
is correct and aligned, run a bead of
wood glue or UHU por around all the
joint lines.
Put aside to dry / set
IMPORTANT: check that the fuselage sides are aligned here before using
glue
90
degrees
Note !
Why not spray the fuselage with some
acrylic car paint, black looks good