Help with what to write for Art Essay; Outline?

So I have to write a 6 page paper on an art piece of my choice, that I found at a museum. It is basically a response paper and there are no specific guidelines on what to write. I started writing it and I am up to about 2 pages. I have no idea what else to write. How do you even write 6 pages on one piece of art?? Can someone please help with maybe an outline or ideas on what to write?

Well, you are the person who knows more facts about the piece of art you are going to write. So you may be able to add much more flesh into the skeleton I'm going to suggest;

Introduction - Introduce your art - who's work? when? why it is famous? why you like it? etc., but very briefly.
Then you can elaborate on each of the above in other paragraphs or sections.
Finally do a conclusion to reinstate your opinion on this piece of work.
Google will help you research on this artwork :)

You could have:
-Introduction (Statistics and such.)
-Perspective 1 (Think about one part of it; what does it mean?)
-Perspective 2
[Maybe] -Perspective 3 (+)
-Analysis (What does it all mean in conjunction? What does it mean to you?)
-Conclusion (Sum up the piece and maybe a bit about art itself)
Maybe this will help? And you can have more than 3 Perspectives, just listing things off. I hope this helps a bit.