I've got a few blank walls in a new place we've bought, and was thinking of getting some of our photos blown up onto canvas as wall art. Has anyone else done this? I have a few specific questions if anyone can help: What sort of resolution is necessary for a reasonable picture? i.e. if I want to do a 120 x 40 cm landscape, what sort of size file do I need? Where is a good place to get these done? Cost is obviously a factor, and I would prefer online/delivery being a possibility as we live country.