I've also started creating free Assets. I'm Kendrick ML and I help schools, freelance teachers, learners, solo and team gameDevs and hobbyists achieve their creative goals by offering them free asset packs, and here's the arena builder for you to enjoy, I hope you like it, lots more packs are coming, so it'd be a shame if you missed out, so follow me, rate this pack, add it to your public collection if you like it to help others, and share it with your colleagues or students. 

https://xthekendrick.itch.io/arena-builder-8x8