Normally I ask for pictures and they really help explaining the
issue... no offence, but your pictures really ummm, don't help.
Maybe you could take the picture of the whole 4x6 on a black sheet
of paper with a ruler showing scale?
Thanks for the reply, but as I went to print out another attempt
SB tried to use my standard wireless printer. So, I changed my
default printer to the Selphy and it seems to have started working
as first expected; It is now printing with a small boarder to the
left and right of the page and a larger centre boarder as
I was going to say that I think it's due to printer settings
(see my other post about 'shrinking photos' you would just need to
work out the printer settings, try scaling options, fit to page,
etc. until you get it right, you can usually print to a file to
save printer ink and paper too. I had an issue like that and when I
started using a different printer, the problems went away.