Hey, some helpful advice from a more experienced modder.
1. You need to remove the alpha channel from your texture. Go in Photoshop or GIMP and turn the Alpha all the way down.
2. Most of these models require multiple textures, but you can only provide 1 in TTS, so you need to make a new texture by putting all of them in 1 file, and then changing the UVW coordinates of the model to match the new texture.

These are amazing! The variety of models is really really useful for one of the D&D campaigns I'm running. Do you have plans to add more models or make a new model pack? If so, Id live to know because I'd download it in a heartbeat

Morrowgar has been fixed.

Well, it SHOULD be updated. Doesn't seem like the morrowgar model is showing up for subscribers yet. I'll work to fix that.