This is what the final rocket looks like (minus the propeller). The wing is connected to the fuselage through interlocking in and screwing the back of the wing. The plane features 4 separate servos for elevon control, as well as a motor in the back for propulsion. The overall building process was somewhat difficult at times, but overall it wasn't too bad.
Building resources
Instructions/website - https://store.flitetest.com/ft-retro-rocket/
Plans - https://drive.google.com/drive/folders/1zqAXnd0DV8OJyBTwRlJYKYAiPZfuO6XX?usp=sharing
Challenges
The biggest challenges with this build were the canopy and the fuselage because it involved having to bend the foam and it was a difficult task to execute well. To get a proper fit it was difficult because it was hard to gauge just how much you needed to bend the pieces before they were glued together. the actual execution was not difficult, rather getting things to fit nicely and look good simultaneously was a challenge. The servos and electronics were also difficult because the video tutorials explain very little about how to connect everything together, and just assume you know what you are doing.