This is a kit build with good instructions. Be sure to include all interior parts even if you know you won’t see them otherwise the plane will tilt up. I built the main body then primed and painted after masking the cockpit. I painted the pilot and interior before, of course. I painted all add-ons separately before gluing them on. Glue the underwing stuff first. I used a small box with cutouts for the wings and nose to support the fuselage and to keep the tail assembly from breaking . Then flip the plane over and attach the top surface pieces.  Lastly, flip the plane over on the box and attach the painted landing gear parts. Then decals.  The nose decal is tricky…go very slow. Good luck

-Charles