I want to go to a fashion design community collage next year and in order to get accepted there without HS diploma i need to show "special artistic talent .

I need to send my portfolio until the und of winter so I effectively have 3 month practice + 1 month portfolio

Can you recommend any free sources i could learn this specific things from?

>fashion sketching overall
>drawing proportionate body/fashion mannequin in different 3d poses from head
>clothes/materials
>hair

That's more or less everything I need, I dont need to draw faces or hands, just this perfect this very narrow scope