After making the 9" Heart Mini Print, I though I would downsize even further and look at reducing the Engine House. I think it looks great and completely legible. This mini Engine House sits snugly in a 8 X 6 frame. I even minimised the Heart even further using a 7" square box frame. Overall I love them, and Mrs W already has them up in the bathroom!
Initial costing suggest £12.50 for the 9" Midi Heart, £10 for the Mini Heart and £10 for the Min Engine House. It also includes the frame!