How do I change the tiles on my interior door?

[maeline-078]

I currently have old yellow tiles on an interior door! I now find them horribly ugly and old-fashioned! Do you have any ideas for prints or colors for my interior door? I'm looking for something modern and clean. I found hammered glass on this site: https://www.glassfonster.fr/verre-imprime/3986-verre-imprime-a-motif-martele-4mm.html which I find quite pretty, what do you think? Only I don't know how to know the thickness I'm supposed to take? Can you explain to me how to measure the thickness of my interior door pane?

I thank you in advance for your answers and hope to be able to change my door tiles myself!