@Staren Related website recommendation:
this perfect website, made by some person who likes stereo pairs taking and sharing them (check out the "Gallery" section): https://www.stereoeye.jp/index_e.html
It has excellent how-to guides, lets you choose between the various viewing methods (cross-eye/parallel/anaglyph), and is basically unchanged since I first discovered it at least 15 years ago, so I'm delighted to see it's still around 😊