we don't know what software you are using but tracing a bitmap usually comes down to using the bezier tool and some time, even if you trace the image some 'tweaking' is usually necessary, depending on the level of quality you need for the project/customer.
for common items like this they can usually be found in vector format. alternatively there is always our very own "Vector Doctor" but this is a skill everyone in the trade should take the time to learn, imho...