Right amount of light, combined with watering by dunking the pot in water long enough to actually saturate the soil (like an hour for me). Especially when you see a bud start to emerge, you need to dunk it. Otherwise the leaf will start to emerge, but stop growing, and you end up with tiny leaves.

Terra cotta spikes also help.

Lots of light, rotate it every now and then, and water deeply when it starts to get dry. I also mist it occasionally but that's about it. That was actually a "rescue" plant a friend was going to throw out.

Ignore the photobombing pothos. I need to get it re-potted into a hanger. I propped it last year and it's sprawling everywhere.