In my Beading Circles Round Metal Rings, I started a compilation of varied samples that resulted from a tutorial on how to bead in circles around metal rings. (Original Tutorial: YouTube C y L Accessories, Tutorial Aretes de aros decorados con cristales y mostacillas.)
This is my photo tutorial (which is often easier and quicker referencing that videos when you only want a refresher) based on those same principles. Specifically for how to make this pair of earrings.