Shed extension

This is the "summerhouse" or so it was described on our schedule 7 years ago.
The house we have is 200 years old and was 3 flats when we bought it. Slowly got it back to one house and decided this year to give outside a little attention.
It was decided that the summerhouse should get a face lift and extension.
It has been the venue for many wonderful things in the last few years including a male bonding session when it was in danger of collapsing, many many toys tea parties, smoking shelter, late night watering hole, venue for reliving our youth as it has a record deck in it, just to name a few.
So extension decided. Should increase space by at least a half again.
The plan has been, shall we use the term, organic. Simply due to the fact I haven't done anything like this before.
Would like to do it for as cheap as poss so thanks to Mintlaw reclamation yard the total cost of frame and one window stands at £10.
The interior is planned. Will include all walls painted white, an old wooden bed frame made into a sofa/day bed and a woodburner made out of an empty gas cylinder. Google them, they look smart. Thanks to Ally for that suggestion.
My talented wife will be in charge of interior decoration and all furnishings which will look fantastic. Check out her website at www.daisyglaisy.com
I have really enjoyed doing it so far and do hope to finish before Oct but that all depends on pennies and old cars not costing too much between now and then. So only a few more days till progress resumes. Fingers crossed!
I will post the progress of this wee adventure.
Thanks for looking
B