Using hand painted patterns and some interesting geometry, I have created a personality filled Overlay/Scene setup for Twitch/Mixer/Streaming! I created this using Photoshop, as Photoshop has an awesome pattern system that works really well if you create yourself a seamless pattern. I would suggest using filter > offset to create a seamless transition if you want to make patterns yourself!
If you're a streamer and would like to purchase the Pineapple overlay collection, please DM me on twitter @Floodwing. Thanks!