Suggestions2

Hi,

I was literally just thinking that I should maybe put more headings in, so I appreciate you suggesting that as well!

I think my rationale for the placement of the Technology section is that it goes in a semi-chronologial order for top-level headings. It's not perfect, but it's what made sense for me. I was sort of hesitant to put too much stuff under "Challenges" just because...well, there are quite a lot of challenges in this situation! I will try to put more subheadings in there too though, I agree it's getting sort of wordy.