I needed, at some point, a “fire animation” that would be:
1. looping seamlessly
2. horizontally tile-able
I googled and I googled, in vain - I couldn’t find anything but a small tutorial about blending modes. So I took on doing it myself and with some Photoshop scribbling, I got what I wanted - something like this. How can you too do something like this? Very simple, just follow the steps in my tutorial.