In need of help in the form of a list of things I need to learn to create a single model

[Lexi]

I have a large school project due in about a month, and I chose to create a 3D model for Dota 2 in Blender.

What I need is a list of things I need to know to create a model that could be accepted by Steam Workshop.

I know that it's mostly experience, but simple things like, how to create a sharp edge, or how to remove a certain part.

Thanks.