Thank you for your kind replies, the existing planting from previous owner of house has helped make it fit so to speak, the rhomboid shape gained an extra 10 Sq ft but the angled roof is a pain to trim up, will have a flat trim made up to plant on the wooden fascia to make it more visually appealing, as they say experience is something you get just after you needed it,
Chris
More progress, the corner trim are upvc fascia corner pieces , the consumer unit and wiring has been fitted , 4 x computer fans fitted at the top front and connected to the solar panel to give a positive air flow , seems to be working well ,need to fit the vents at the bottom back. I[nternal ply panelling to be ordered , finally got most of the detritus out and swept up, next job is to make up the corner, door and window trim pieces, can see the end of the build now,