One sign of quality workmanship on a jewelry piece constructed with any gauge of wire is finished or smoothed wire ends. It only takes a few seconds and makes a big difference in the final product. Imagine putting an ear wire that has not been smoothed in your ear-ouch! Or putting on a beautiful pendant you just created, only to be scratched by an errant wire end. Even if the wire end butts up against another piece of wire, gemstone or piece of metal, the finished piece will just look better if you smooth the wire ends.
When you reach the spot in your design where you will be flush cutting the wire end before you tuck it in to the design, smooth the wire end. Even if you are making a spiral with the wire, smooth the wire end before doing so.
When the wire is cut to a specific length, as for ear wires, you can finish both ends of the wire before you start construction, or smooth the end where you will make the loop. Then finish the ear wire and smooth the end that goes through your ear lobe.