New "Journey Upstream" pages for subscribers, plus progress images

Pages 19-22 are finished and ready to be read!

Alrightie, the next 4 pages of “Journey Upstream” are done! Only 4 this time, hence why the update is posted this early in the month. But with how much work these few pages took to make it feels like it’s been way longer since the last batch! Getting back into drawing in this “normal” style after the prologue was a bit janky and slow, but I’m starting t…