Solo cup challenges and tiny pot challenges are kinda tough! Make sure you keep it watered, as they tend to dry out in less than a day. Especially when they are flowering and the tiny pot is filled with roots.
Put it in 12/12 cycle from seed, so it starts to flower ASAP.
Make sure to LST and make it look original!
Put a creative flair on the plant so it doesn't look like a stick with one bud on it.
Dang, now I want to enter... I think I'll use my triceratops pot...
Good luck!