Picture file getting cluttered.

In my 15 years 11 months here on BCTS, I uploaded many pictures. Right now, I'm involved in Melanie E./Rasufelle’s One Dozen Roses project. I've taken on the task of collating and formatting the collection. Counting the 12 stories and the cover, that means I'm adding a large group of photos as I submit things to the group.

At any rate, the pictures file is getting a bit cluttered. I have delete some of the pictures but still have 88 there. Is there a way to create a folder in that file that file so I can move some of them to or otherwise organize them so it's easier to find what I want?