So I learnt how to do it as a kid. Basically, what I do is, imagine you are looking through the image and past it, like if you were looking through a tiled win

So I learnt how to do it as a kid. Basically, what I do is, imagine you are looking through the image and past it, like if you were looking through a tiled window and wanted to focus on the on something outside small. Then after refocusing your eyes (you can't blink or else it'll reset your eyes) keep doing it, it can take you ages, what you'll see are the tiles. Also what helped me, is focusing on a single point and moving back and forth. Good luck!