Both examples of Fair Isle knitting are fabulous...which I hope I can accomplish someday. My floats are messy and often too tight!! You both inspire me to keep trying. May I ask if you find yarn weight and needle size significant? And also 'how' you carry the yarns, eg. with both hands, over one hand? Continental or American style. I'm a thrower trying to learn Continental. Thanks.
I knit fair isle using both hands. I try to I employ patterns that do not require long floats, but if so I secure the floats every fourth stitch.