Welcome - love to see another artist here. 🎨
When you share your art, or any note, try using appropriate hashtags to help others find you. #art and #artstr are good general ones. You can even make up a hashtag for just your art - I use #rustypuppyart so someone can use that if they want to see all of my art on Nostr.
If you like it here and post a lot of notes, you can create a website from your notes using your Nostr account at https://npub.pro - my personal site is https://rustypuppy.npub.pro and I run monthly art challenges as nostr:npub1wdpfy4xgam85u9wxpuau24qrddpwqk53gexvnnnmguyqqtvspjeqvc0p5m (https://www.nostrartstr.com - also an npub.pro site but with a dedicated domain).