I have neither the label sheets, nor the applicator, yet…
No, no, no! Don’t put labels on optical discs! They will deteriorate much faster than the disc itself and when they do, they can cause possibly irreparable damage to your blu-ray player!
Take a look at this article. There are also posts about this floating around this forum.
People posting disc art around are here intending it to be printed directly onto inkjet printable discs using something like this:
I respectfully do not agree. I have been using printable labels for a few years with no issues thus far (to be fair, only been using PS3, PS4, and other Sony branded blu-ray players) While damage to any player is not impossible, I would argue that this would only occur after hundreds of hours of constant play.