I'm still using and loving it. It's helped to keep me organised, and remember to do things that would otherwise slip off the radar. The only thing that's missing is submission deadlines, since they're in the diary I bought last year. As I suspected it's becoming a pain having two separate planners, so I'm going to start putting the deadlines into the bullet journal too. Maybe not all of them to start with, just the ones I've actually decided to write for, but that could change. We'll see how it goes.
I've started using the back as a scrapbook for ticket stubs and the like. There's only a ticket for Rogue One at the moment, but I'm sure it'll fill up over the year. Again, I don't want more than one notebook on the go.
I managed to write three pieces of flash in January but two of them are probably going straight in the oubliette. It's not a great start to #12for12, but I think the other's salvageable so there's that.