I have been restoring old 1978 Kenner Xwings. I buy them with broken wings and print new ones. I recently decided to convert a few of them to the Poe Dameron Xwing.
Print 2 hinges. Insert the metal rod into the hinges then insert all 4 wings and line them up. Use rubber bands to hold the wings together. Then drip some thin CA along the hinges to glue the wings to the hing joints. Pay attention to the T and B on the wings. Carefully insert the wing set into the R2 mechanism.
If you want the cannons to attach easier, look at this version with magnetic cannons...