Dry fit. Dry fit. Dry fit.
Before you put any glue in a seam, make sure it's folded the right way and the fold is clean -- check the channels are clear and all the bevels are cut all the way to the paper hinge.
. . . and drop by dollar tree and pick up 3-4 sheets of DTFB, then trace out the parts on the clean board. If you mess something up or *when* you crash and damage something, these will become your spare parts.
Also, consider doing something to waterproof it. DTFB isn't a high grade material, and will eventually warp and delaminate over time. It doesn't need to be done right away (and if you fly like many of us, the plane may not last lone enough to matter) but snow/rain/drizzle/BAD humidity will do nasty things to the paper. My go-to for waterproofing is the oil-based minwax polyurethane -- wipe on with a rag, wipe off with a rag, let it dry overnight. It stinks and I wear gloves and old clothes, but the planes become MUCH more durable (to anything but high-speed vertical landings
)