Overall, I think the freehand circle looks the best because it has a hand rendered, analogue feel to it which is consistent with the way I did the pattern. It seems to match it better. By going with the geometric circle, I think it will conflict with the irregularity of it. I've decided to make it freehand so theres not much point trying to disguise it.
Geometric circle
Drawn with circular marquee tool.
Irregular circle
Slightly skewed circle to accommodate the shape of the design
Freehand circle
Loosely freehand drawn circle
