Allow user to reorder uploaded images. Merged

As a designer, when I upload mock-ups, there's a specific order I'd like the images to be seen. I like the ease in which I can upload multiple images at once. However, the images are processed at different times and they appear out of order. The only way around this is to upload each image individually in the order that I'd like. 

From the screenshot below, it would be great to have a feature where I can drag the 4 images in order prior to clicking submit.