i want to  make my own but idk how

 Watch loads of videos.

It is in no way something you can learn in a day, but if you know what you're doing it's incredible how easy it is to work in.

I recommend downloading the program from https://www.blender.org/ or off Steam and following some Youtube Tutorials as a start

https://www.youtube.com/playlist?list=PLrgQj91MOVfjTShOMRY8TLmkJ7OFr7bj6

Watch this tutorial series. It's what I used when I learned.

 Cool I will when I get blender.