Finish It February, as far as I know is a knitting thing started by Roxanne Richardson. I'm going to be writing about it with all the details. Although it focuses on knitting, you could apply it to any creative activity, especially ones where you have lots of unfinished items.
The journal ideas sound interesting - I like the wisdom idea and the crypto learning journal.
I think gel medium is something I need to look into. I am going to into town this week so I can have a browse in Gadsby's, the art shop.