I've just received my review copy from Natasha Nixon and overall, I'm fairly happy.
In terms of content, I give it 9.5/10
It was clearly well researched and it appeared as if she was speaking naturally on the subject, unlike some other writers. I was quite impressed in this regard
English
9/10
Well written, good structure, no major grammatical errors
The only problem was a few tiny spelling/grammar mistakes, however they were not major by any means.
Overall, I give Natasha's service a 9/10 and look forward to using it in the future.