Hey Carnegriff, I'm a bit new here and seeing if this DeviantArt thing is a worthwhile so I don't have a premium membership in which to give a critique (found a request in my Messages... don't know if it was random or not). Is "Violet" shown above how you're going to display it?
The light box pieces you have are a really sharp idea. Have you had much luck moving them (sales)?
I sell the lightboxes through a number of galleries - south coast Brighton etc and London, I have 'moved' about 15 lightboxes but they are all originals and slightly different designs - most successfully is the moth lightbox design. DA is great for feedback on work but I don't sell through here or use their print service as I have my prints published by a company called Harwood King. Like most things DA will give back what you put into it - The piece Violet is still on the board - I will probably mount it with the gumstrip - it looks nice currently as there is a spill which stretches across a white piece of paper adjacent to the one shown - but I cant take it off in 1 piece which is a shame!