Simple, Fast DIY Wall Art Project! Hot glue faux flowers around the border of a wall mirror, picture frame, etc. http://hubz.info/100/i-love-graffiti-and-street-art
DIY Flower Shadow Box. Spray paint fake flowers one color and attach to a canvas. Would be great above a bed.
Maybe instead of that large white frame of flowers, something this size or a little larger could be an alternative? - in white- and filled with colorful flowers as part of the guest table backdrop? This would then be an alternative to the green/flower wall backdrop if that can't work