That's fine to lock the sheet, but I'll let you know if anything arises. Nice one initially getting off to a good start! In the case of your success dropping off, I'd probably assign a 'passable' grade to that. In my mind, the 'passable' grade means "I did noticeably better this month than if I hadn't been trying at all." But that's just me, rank yourself how you deem fit. In regards to the graph, it was technically correct that it was going over 100%. It's showing both the success/pass/try harder rates as well as the total percentage of goals filled in. Those things overlap as the the latter is essentially the sum of the former. If everything was filled in for a month, it would cap at 200%. However, it is partly down to the style of graph I chose too. I agree that it wasn't ideal and could've been potentially confusing. I've upgraded the graph style to something that I hope makes a bit more sense.