5x7 frame

I would like to fill a 5x7 frame. What settings do I need to put this on?

I think you should do the following:

1) Choose rectangle shape
2) Set aspect ratio to 0.71 (which is 5/7)
3) Visualize your cloud and save it as PNG setting width/height to 2880 (maximum quality)
4) Print the saved file on 5x7 frame as like any other image