Hi, and thanks, and sorry for the late reply, for the background, size isn't really important as long as it's under 3 megabytes, this image i use as the background was already seamless so it wasnt a problem, but you could make an image seamless by mirroring it on both x and y axis, results may vary but it should work, for banner it's only important for it to be transparent and size i think around 900 pixels on x axis but i will have to check that