Hi everyone
I agree with many of you that the first five letters of 11ac do not mean "feature". I did manage to get an answer for this but didn't find it satisfactory. Thanks for the hint on 13ac. I'd never heard of that word. Rocky, My great grandfather was a bootmaker and my grandfather inherited his last, which is how I first came across this word. I was always fascinated by its shape.
I've nearly finished, just three left in SE corner and several I can't quite parse.
How about a hint for 29ac. That may help me get crossers for 25d and 27ac.
Non parsers are 10ac, 6d and 8d