To play swung quavers, start by practicing playing eighth notes evenly. Once you are comfortable with this, try playing the first note of each pair slightly ahead of the beat and the second note slightly behind the beat. You may also want to experiment with the amount of swing that you use. Some players use a lot of swing, while others use only a little. The amount of swing that you use is a matter of personal preference.
Swung quavers are a fundamental rhythmic pattern in blues music. By practicing this pattern, you can improve your blues playing and develop a more authentic sound.