How do you submit fan art to tumblr?

[Polly]

This probably sounds really stupid, but here's my question. So I just recently got a tumblr so its still really confusing, so basically I wanted to submit fan art to one of my favorite things. So the girl has all her fan art tagged. So my basic question is do I just post it? Or is there some special way I'm supposed to submit it to that specific person??? Thanks, and please only answer if you have something nice to say

[Locoluis]

http://www.tumblr.com/docs/en/using_messages

[Jurong East]

Recently, tumblr added a feature that allows users to ask other blog users questions and send comments. The need for this feature came about because of a site called formspring, which allowed people to anonymously ask questions, and have their questions answered. There is a feature on formspring which allows your answers to appear on your tumblr blog. But after a while tumblr realised that people had started using formspring more often than tumblr, which alerted them of the need for an ask feature.

It works the same way. People click the ask button on your icon, and ask a question, so that the next time the blog user logs in, they will see the question in their messages folder, and be able to answer the question. The answer is then automatically posted on their blog to allow all tumblr users to see. This provided an innovative alternative to formspring, and since its introduction, more and more people have stopped using formspring and started using the ask feature on tumblr.