Here’s a tutorial by GabaVR for creating an effect which I call a tiny planet planet reflection (or what GabaVR calls a holey planet).
With this effect, the tiny planet looks like it has a reflection in standing water, or has a hole. It’s an interesting twist on tiny planets.
GabaVR reveals the secret to creating this effect in this easy-to-follow tutorial:
I used a similar process to make this tiny planet photo last year: