The old floorplan of the gym was a major influence in my design, with a lot of the rooms being completely reversed in order to create a better flow for the gym.
What should I upload in this Develop Solutions step?
Consider uploading images (JPG, GIF) of your rough digital model. It's ok if your model is still a work in progress. Show an axonometric or perspective view with people, which will help others understand the scale of your library.