Sometimes we take for granted that text is an image–the letters are images–and there are some writers who are very conscious of that. When we're reading a book we take for granted that the text on the page is an image, and the focus of the book is what the text is communicating. Spend some time thinking about text as an image, like Rachel Blau DuPlessis's work. Rachel is a poet and a critic who also does collage poems. Poems that are made from collage, and they really emphasize text.