PROJECT Dooney & Bourke Coated Canvas And Leather Rainbow Monogram Satchel

this one is sold to me, not in the actual condition it was in. they used a lot of filters to get out all of the staining. I would just like to see somebody who knows how to fix it up. I don't have any idea how to get this staining out of the coated canvas. The leather is in great condition. (see photos) height is 6 and 1/2 in length is 9 in width is 2.5 in shoulder drop is 6 in. has the amazing rainbow zipper and the classic pink Dooney heart interior has blue lining main pocket has rainbow zipper closure---- inside there is one tiny zippered and two small open pockets two side pockets are magnetic snap closure