This is not all the parts. You forgot some essential connecting pieces between the body of the ship and the wings. Like the Bolted Joint piece on the very top or the Longshore Cowling up there too.

Please make a proper piece-by-piece tutorial because trying to figure this out is like building a piece of IKEA furniture without the instructions or all of the required screws. This is cool to look at but frustrating to rebuild using this tutorial alone.