assemble and paste the pieces in order using cyanoacrylate glue (superglue). use the joint pin to fit the pieces. in the images you can see the order of the pieces.
the electric motor can be obtained from a microservo of 9g
If you require replacement parts, look at this link https://www.thingiverse.com/thing:3557243
I'm working on the red baron albatross, if you want more projects like this, do not forget to donate to paypal. https://www.paypal.me/jamendozatorres
or if you like my job, you can invite me for a coffee or a beer... maybe.