I'd be interested in helping out. I'm a programmer and know how to break things, I'm also usually pretty good at figuring out why things are breaking the way they are. 

I've gone through the process of testing a few other games before and usually I provide some decent documentation. I don't really have a portfolio besides my own game I'm making on which has a page on itch https://scrapmettle.itch.io/nesinspiredrpg 

SrapMettle#9749 is my discord.