Models with more than one expression

[ElmerFuddFan]

Do I open the original and unedited model in there? Also what are the names of the meshes I delete and the ones I join into one?

Yeah, the original .fbx. It starts out small in blender so click on the empty at the top "elmer_fudd_cupid_1" and scale in the 3D view by pressing S and moving the mouse away from the center.
The names of the meshes depend on what face you want. Let's say I want Elmer's scared face, then I would delete:
elmer_cupid_head_sad
elmer_cupid_head_angry_smile
elmer_cupid_head_default
And join:
elmer_cupid_head_scared
elmer_cupid_1_body
elmer_cupid_1_quiver
elmer_cupid_1_wings

I'm still confused sorry, what I'm trying to say is I want the model to be able to have different expressions still, including blinking.
I'll try this too though. I'm planning on attempting to turn it into the MMD formats anyway and not all models are too expressive.