Straight Lines and Diamonds - argh

I said somewhere back there that the first of my practise would be straight lines and diamonds, especially since my diamonds weren't 'just touching' the lines, so that is part of what I'm practising at the moment.

So I've been practising to get my diamonds just touching the lines. And then last night I noticed that the Bedford Hours diamonds are built up - made more pointed with the nib edge at the line-touching end.
Argh!
So now I'm practising built up just-line touching diamonds. It's a bugger - my practise paper doesn't like it much and I'm getting paper fibre in my nib.
I'm doing that sentence that was created to look unintelligible in g.t.q. - all m, n, u, i's and a few v's. So endless diamonds and straight lines. I'm not worried at this stage if the B.H m,n,u, i's and v's are slightly different in form - I'm going with the basic ones because this is about lines and diamonds. I'll post it when I can get it looking reasonable.