A couple of more pictures.
That's looking nice and neat. As has been said we all have our own preferred methods but at the end of the day it is the result that matters and you have achieved what you wanted.
I have a slightly unusual yet preferred method of painting boot toppings on hulls. Most people paint them last after doing the upper top coat then the lower hull colour but I do the upper colour first, then a single mask and paint the boot topping, then lastly mask the lower edge of the boot topping and do the lower hull colour. This way you are only masking one line at a time and it works for me. I mark out with a pencil tied to a block and draw a light line around the hull with it set horizontal. Marking it from the deck can work with some hulls but most, particularly around the stern area require a line of varying distances from the deck to achieve the correct waterline.
This is also where marking out and painting achieves considerably better results than simply applying lining tape as the actual thickness of the boot topping nearly always varies in thickness around the stern.