I started a 12 x 24 this morning, which marks the largest landscape I've painted thus far. I have the major elements blocked in and, once that's dry, I'll start defining details. So far (albeit, just the first hour or so) it has been a lot of fun. Working on the 5 x 7s restricts me many times to working with corners and edges of the brush, whereas working larger has allowed me to use the full brush which is a nice change. If I can get enough time in today (between kids and illustration work) I'll post a progress shot.
Between drying times I'll also continue working on 5 x 7s for the 75 for 75 project. We also have a Facebook group set up for 75 for 75, so feel free to follow along with us there.