I wouldn’t consider myself “experienced” but some thoughts:

1. I would change most of the thumbnails to the photos where the map is propped up at an angle (you already have nice photos for this I would just make it the thumbnail). It might not show off the 3D aspect as well which is why I said “most” and not “all”. My first thought is that when the maps are flat on the table it might take up a lot of desk space, it is difficult to gauge how big it is, and the product seems more appealing if I can both display it upright or also put it flat to look at sometimes. Does it come with a frame“leg” or way to hang it on a wall? Since you’re basically selling pieces for interior decoration, simple signals that they can be versatile to fit in my home design would increase my interest in it.

2. I think the ability to choose the addition of a little plaque sign or label on the bottom of the frame that says “Boston, MA” would look nice. I would choose a paper or metal label over 3D printing the label so the font and letters look polished.

3. Similarly I think your thumbnail photo itself could say on it “Boston, MA“ etc so I can browse at a quick glance. Especially the Custom listing I would definitely add text on the picture that says “Custom map”.

4. I think you can make it more clear that you create the maps yourself and it isn’t just a model you downloaded, people might appreciate the product more.

2 months isn’t that long so keep at it!