Hi Shaun,
Your handwriting looks fine to me. I do think you can improve legibility, though, by using a less wet ink than Montblanc. The ink you are using now makes the loops etc. rather fat for a fine pen, which makes the characters less well defined than they could be. It looks a bit like a B nib used for an F-size script. Try Waterman or Parker ink, to improve the definition. For blue that would be Waterman Florida Blue or Parker Quink Washable Blue. You'll find the characters will be more clearly defined.
If you don't have to use blue, you could also try Blue Black or Black from either brand. For exams I use Waterman Blue Black as my main ink, with lots of aother colours to brighten things up, draw graphs, to emphasize things, etc.

. BTW, I have an M-script, and I normally use M-sized nibs for writing at exams. The characters I write are probably about 50% bigger than yours.
HTH, warm regards, Wim