First mature tree bought from midamerica bonsai show, any advice?

[WIlliam_Butler_Yeets]

It’s about 12 inches across the top and 10-11 inches tall, think it’s a 5gal.

12 in diameter and 12 inch height cylinder would be basically 3 gallons

 

[drip]

12 in diameter and 12 inch height cylinder would be basically 3 gallons

Ohhhh got it lol. Never had anything bigger than a one gallon or a pond basket yet