A man shed is born.

[celticdog]

Here you are then - flower basket, wire gecko and festoon lighting all completely optional.
Bolt 4 -7 foot doors together add a 12mm ply gable end front and back- run a length of 2x3 across those at the point lay 2 pieces of 8x4 OSB board each side for the roof overhanging at the sides and door end, sides provide for gutter and door end a rain canopy add a door and paint whatever colour - Nato green for me. I dont keep my bike there just normal junk.   
this stuff for the roof on top of the osb http://www.varicoltd.com
You can see the two styles of garage door used. The doors make for a much stronger structure than the thin tin sheds you can buy.
You could use larger double garage doors at the side for a 10foot by 7 foot shed 

That's spot on fella! :thumbup
I think this might a route to go down, you've even put an old front door to good use. OSB- is that the stuff that turns to shredded wheat if it gets wet?