I won't be using the flap for journaling after all - I couldn't leave it blank. After many layers of awful brown gelli printing, I decided to glue 4 leaves on it. I had used these leaves as masks in my gelli prints, but somehow, the prints didn't work out. But the leaves had acquired some gorgeous highlights in the process!
Not much brown on my page in the end. Lesson learned from this challenge? There is a good reason I don't use brown!