Okay, some progress and some more snags.
I skipped ahead and, editing the Artemis's table, got it working in-game. I find that, compared to modeling and texturing, tabling and balance should be a breeze.
Also, I've started work on a new missile which I'll release with the Ammit, the GVM Khepri:
The Khepri is a dumbfire torpedo, designed to be fired at point-blank range by an after-burnering Ammit.
But, as usual, I've been having some more problems.
First, I'm moving slowly on the texture. My texturing skills are unimpressive, as I've never actually textured anything before, and I think my finished product will be rather mediocre compared to other people's recent models. I'll post an update when I have something worth posting.
Also, I'm having trouble getting the textures on my models to appear in-game, even once I've finally gotten them to work on my POF. That's because the Ammit's .DAE which I exported, and then turned into a .POF, was reading its textures from the texture files which I had copied over into the models folder of my test mod when I exported it (not the textures folder). So, even though PCS can read the textures, FSO can't, and so my textures aren't appearing in-game. How do you make sure that the .POF uses textures from the textures folder?