Help I need some guide to make my mod as an overhaul

[Thegreatgiant18]

(This is my list thing I need to work on)

1) Weapons

2) Armor & Clothing

3) UI

4) Crafting

5) Creatures & Animals

6) Buildings & Towns

7) Models and Textures

Followers & NPC'S

9) Landscape

10) Skills and Leveling

11) Perks and Races