Creating a sturdy, strong frame for the model is a first step. All parts of the frame should be 1mm thick - use whatever you have at your disposal to reinforce the parts to this thickness.
Most of the parts comprising the cockpit of the aircraft should be assembled and installed at this time, as the access to the cockpit area is not restricted at this point.

The fuselage of the plane doesn’t have to be divided into many segments to re-create the original look of the airplane. Here, a large section of the plane body is designed as one piece. By cearful forming of this part, you can achieve great results with little effort. Note that the front of the part has sharp bends at the base of the wing, and those bends don’t extend past the white area of the wing’s root.

The front of the fuselage is ready and it’s time to concentrate on the engine and the cowling of the plane. Not much of this assembly will be visible, but it’s nice to know that it is there - isn’t it?
The propeller body should be assembled at this point, along with the ventilator blades, if you want make sure they can rotate. The cowling will cover all of this afterwards, making any adjustment very difficult.

A view af an assembled cowling. Note two grooves on the top for the machine gun barrels. The white bands on the red, front part of the cowling can easily be  masked with gentle application of red paint.

Completed wheel well of the main undercarriage.

Right wing of the plane ready to be closed. Note the wheel well assembly already installed and the proper bend of the wing’s leading edge. This bend should not be sharp, but gentle, with proper radius. It helps to score the edge on the underside of the part with consecutive, straight lines going from the outer limit of the leading edge to the connection edge with the fuselage.

These two pictures show the model ready to receive its left wing. Note the reinforcing strips glued to both edges of the wing spar. The bottom edge of the right wing, already installed, should line-up with the centerline of the fuselage.

Framing of the canopy is the most difficult part of the assembly. The trick is to glue the parts so that a small groove is created along the edges indicated by arrows. Into  this groove you’ll “snap” the clear windshield.

The rudder of the plane. At this point, I didn’t glue the rear edge of the rudder. This proved to be useful later, as you can see on the next photo.

After attaching the rudder to the fuselage, I’ve noticed that its sides “collapsed” inward, leaving the whole thing too thin in the middle. A quick fix was to stuff the rudder with some cotton to thicken it up a bit.

A toothpick inserted through the hole in the rudder makes attaching the horizontal stabilisers easier, and the attachment stronger.

A simple jig is useful when mounting main strats to the wings.

Main strut. An appropriately bent paper clip reinforces the assembly.