Mods have to do this. While I'm not sure the exact etiquette of requesting a pin for your own post (in this case I'd say it would self-evaluate as worthy btw), generally you "deport" (I know it will feel weird, always does) but for reason pick "other" and fill in "sticky" or "sticky request" or "sticky me love you long time" etc. Or you can msg mods per sidebar.
Mods have to do this. While I'm not sure the exact etiquette of requesting a pin for your own post (in this case I'd say it would self-evaluate as worthy btw), generally you "deport" (I know it will feel weird, always does) but for reason pick "other" and fill in "sticky" or "sticky request" or "sticky me love you long time" etc. Or you can msg mods per sidebar.
TL;DR mods/you can't just pin it yourself.