Mirai Suenaga Doll
I've documented the doll production process up until now in the following posts - while they are specific to dolls, you can apply the knowledge to make your own figures and wot not.
#Rapid Prototyping and You
#How To Mass Produce Your Own Products
For those who cant be bothered to go through those posts, here is a very very rough breakdown (skipping a few processes) of what you need to make your own dolls (or other products).
Use Google Sensei to learn how to use 3D software like I did - if you cant afford the price tag of 3D software then there are free decent solutions like Blender.
In our case, we used ZBrush for the modeling and tweaking using 3D Max.
Prep data for 3D printing.
Print 3D Data.
Make silicon molds from 3D printed data.
Make wax clone from silicone mold.
Electroform the wax clone to make the copper mold for mass production.
Pour soft vinyl into the molds to make the doll parts.
Cut off flash and assemble doll.
Make optical eyes.
Do the makeup.
Play with Mirai.
Goal unlocked - proceed to boss level.
If you want to make your own products then start consulting with Google Sensei - its free. Then once you are armed with knowledge, you can use that to start implementing your ideas.
If you want to produce your products in Japan then I will hook you up with the people that you need to know who can oversee the production for you. If you are confident in your language skills and know enough about the production processes then I'll introduce the factories to you.
If you dont have the cash to cover production then start off with what I did and work in a restaurant to save up. Stop giving yourself excuses and just do it.