With my bouquet of flowers aging, I decided to try using my homemade light-box again to take photos. I used my macro lens, adjusted the settings on my camera to capture bright, backlit images.
The following have been taken into Affinity Photo to edit and brighten a little further.
There is still a blush to the background, so I will likely take it back into Affinity to remove that slight discolouration. Otherwise, I think the photos are getting closer to what I want to achieve with the light box.
If you have worked with a light box or the software and have a suggestion, please write in the comments.