Thanks for your advice, I have submitted the plans, I carried on working on them from that post
I should have added double walls, but i am a complete newbie
the worst that can happen is the council bounce them! So i am going to continue working on them, and try and produce some better plans for future projects etc.!
the problem i can see is, where i have used internal measurements for wall and not allowed for wall thickness one of the windows doesn't look quite rightly positioned!
Its all a learning curve and I have never done anything like this till last night! Thanks for all your help and advice
Alan