Is there a way to customize an origin? Like take abilites from a few origins and put them on a new blank origin.

If you create your own origins data pack, you should be able to reference powers in Origins++ with origins-plus-plus:[origin]/[power_name] in the origin json.

yea, i've tried that but i'm only able to change true or false values, and for the [origin] part, do I use the name of the origin that the power comes from, or the name of the origin i'm making?

You should use the name of the origin the original power comes from

sorry but where's the origin json?

In the data pack that you make, there is a file where you define the powers an origin has - this is what I meant by origin json

the data pack on forge? i see a file called origins-plus-plus-2.0-forge.jar, but i'm not sure how to open it

To make custom origins using the existing powers, you will need to make your own datapack. See some examples here: https://github.com/apace100/origins-example-packs

Here is an example datapack for reference: example.zip

Were you able to get it working with the template?

Closing due to inactivity. If you would like further assistance, please reopen this issue.