Get back to it when you can, and if in doubt regarding the resin parts, don't be afraid to ask.
Quite often, resin parts need a little filing/sanding/scoring on the mating surface, to help them 'key' to the plastic. Do this, and fix with a small drop of CA, or better still, 2-part epoxy, to allow positioning, and then run a thin bead of CA around the joints / edges, using the tip of a needle or similar, for final fixing.