AltNCF - Alternative NCF

P.S. Don't aim to do everything quickly, and don't get upset if you can't manage it within your 3 hours. Trying to create your own models is cool in itself, and I fully support you in this and wish you good luck. But you need to understand that creating a character from scratch in 2-3 hours is a practically impossible task, even for a professional working in the industry, and as far as I understand, you are quite a novice in all of this.
Perhaps you will be able to create something in the style of Minecraft, and that would already be great, because even that is not so simple.
I advise you not to think that things are easier elsewhere (about importing with one click in Skyrim, spoiler alert, it's not that easy) but simply to enjoy your small successes, and try to do something useful (learning modeling is useful). I advise you not to plan a mod with 800 models until you have created at least one. You simply won't do it. Not because you are bad, but because it is almost impossible.

Added 4 minutes ago

I wasn't talking about the skeleton. I'll do it in a couple of days.

Added 1 minute ago
I mean, I'll set aside time and do it, not that I'll be working on it for two days.

A skeleton is implied in a "finished" model, as are the texture and UV mapping.
A high-poly sculpt is not considered a finished model, because, surprisingly, it cannot be used in the game.
Anyway, just for fun, how long will it take you to do the skinning? 5 minutes?)) or "I don't know yet, I haven't looked"?

Added 2 minutes ago
I'm just kidding, joking.
But maybe I can give you some advice on what and how? What stages will be in your work on creating a model, what programs will you need, and why won't you be able to do it in 3 hours?