Depends if you are doing a full length mirror, you would want your camera to reflect that

Hello everyone, I’m currently in the process of making my own Magic Mirror. I have already all the parts besides the two way mirror film. I bought 4mm glass that was cut to my exact measurements but I still need to find the best two way mirror film that I can apply on this (which can be delivered to Belgium). Can anyone help me with this, I quite scared that I order a complete wrong film. I think I can’t find two way mirror film that ships to Belgium, would privacy film also be good? Would this for example be good = https://www.amazon.com/WochiTV-Interiors-Decorative-Residential-Black-Silver/dp/B07M5W5C69/ref=sr_1_2?keywords=two%2Bway%2Bmirror%2Bfilm%2B80%25&qid=1578415681&sr=8-2&th=1 Thanks a lot!