Firstly I'd like to say how great it is to see such a methodical way of learning how to organise a pallette and composition. Unfortunately, when I use a proportional divider I don't get the same result twice and I'm not sure what I'm doing wrong. I have my string hung up and my shoulders square. I am always sat in the same spot, I always have my arm straight and lined up with the string. The only difference is that I am working a little less than life sized, for a number of reasons.
When the length of the object (bottles) is smaller than life sized, the width is life sized which is a proportional impossibility. I have found that when going from vertical to horizontal and vice versa, it is impossible for me to keep my hand in the same place because the objects are tall and thin, but that is what seems to create this distortion.
I understand that without seeing me drawing it may be difficult to understand what I am talking about and what I am doing wrong, but I guess I'd just throw it out there in case anyone can shed some light, before I have to hire a private drawing tutor
Thank you for reading this