Yeah. You'd have to make at least 15 posts if you want to show off your sprite in a gallery. Best advice for that: don't rush yourself! PC is a large place and there's a ton for you to see, so take your time calmly. :3
Also, welcome aboard! Im glad to see another spriter here! Be sure to.read the rules, and contact me if you have any questions or concerns, okay! Can't wait to see some of your work soon! Have fun!