Thank you both for taking time to reply and also thank you for such a detailed, informative and constructive response.
Yes the main reason for the f20 aperture was to maximise the DoF. I did notice the diffraction you were referring to when i was editing the photos but i wasnt sure what cause it, i do now
I will be opening my aperture up from now on.
I can completely understand what you are saying about the flatter images. Next time i will try and shoot so i have leading lines towards the subject. I think if im completely honest i was being lazy, I stood in one spot and just turned the camera round from that spot
I was also wondering about the ISO. Is it best to keep the lowest ISO (100), set the aperture to say f11 and just increase the shutter speed?
I guess shutter speed most of the time is the least important variable as we are often not trying to capture fast moving objects.
Thank you very much for the link i will have a good read of that
As these photos were taken just down the road from me, i am going to go back there today and try and take some similar shots with the tips that you have suggested. I will think more about the composition techniques, close my aperture and i am going to try and get there for the golden hour/hours and hopefully improve on these images, although i know that it will take lots of time and practice.
I will share my updated shots soon.
Many thanks again.