An obvious point, but your marketing page absolutely needs a before -> after comparison. Just showing the after image doesn't work. Also I think it really need

An obvious point, but your marketing page absolutely needs a before -> after comparison. Just showing the after image doesn't work. Also I think it really needs to let you actually try it with your own image (watermarked or whatever). Who wants to pay 5 pounds to find out the generated image doesn't quite look like you, or looks too fake or whatever. The pricing seems maybe ok if you know you're definitely getting a usable image out of the process. But if there's any risk whatsoever, it feels much too expensive.