Artwork for Banner/Poster

Artwork required for a banner stand 1800mm (h) x 830mm (w). I have a photograph of 3 rings which must be included in the artwork. And the phrase "Garden of Colour" must be used. It should be based on a garden/butterfly theme. I have attached the file with the photograph of the 3 rings. And also a file of 3 butterflies I had purchased from istock which can be used. I would prefer if the background was white as this would make the rings look better.