Size of your shed - a small shed can be tucked in to a small corner and will not intrude too much, however a large shed will be very imposing if too close to the house
Size of the plot also make a difference. If the shed is too far from the house then it wont be used as much as one closer. However a close shed is likely to be used as a dump for anything you dont want to find a home for in the house.
A large shed close to the house may restrict the access or view of the remainder of the plot, and thereby render it useless..