Try
Lang-8 - Multi-lingual language learning and language exchange | Lang-8
And since you also like art you should make an account on pixiv (It's a Japanese art community site.)
イラストコミュニケーションサービス[pixiv(ピクシブ)]
Here lately I've been going on these sites a lot and I've commenting in Japanese every day
Also, I've made a list of all the words to know to get through registration on pixiv on JapaneseClass.jp
JapaneseClass.jp | Japanese website registration by StonerPenguin (Scroll down about midway and click on the 'quiz' button).
I hope you can read in Japanese!
