Watch the ii V I vi Etude Level 2 online guitar lesson by Vicki Genfan from Open Tuning Handbook: Rhythm
Make sure to keep your strumming hand in the "down-up" motion. Experiment with the different sounds available for percussion on your guitar. See where bass notes sound the best. Can you find a couple of different places to get a higher "snare" drum sound? Play around with using the flesh of your fingers to hit the guitar, and then use your nails. Notice how the sound is different. Are there other sounds you're able to find?