I think she was asking how the blocks can be improved -
Did you square each of the HST (half square triangle) units before continuing? I've found that if each of my sub-units is as accurate as I can get them, it helps with the next step.
There are times that 'good enough' IS good enough. But if someone knows that 'better is possible' - why not encourage that?
I also know that - usually - one does get better and/or more knowledgeable with practice and experience.