How do you put an image as a picture caption on myspace?

i took a picture of a painting that is in my house and i wanted to stick it as a caption on one of my pictures on myspace. i went to tinypic.com and got the URL but whenever i stuck it on my caption it didn't work. i also tried putting it as my headline but alls it did was write out the URL instead of changing it to the image. so if anybody knows how to put an image as your headline or picture caption, please let me know!:)