Try this exercise:
- Choose two chords you know. You will be moving back and forth between these two chords.
- Play the first chord eight times (strumming evenly), and then, without breaking the rhythm of your strumming, quickly move to the next chord, and play that chord eight times.
Did you need to pause while switching chords? If so, let's try and examine what the problem is. Try the following, without strumming the guitar:
- Put your fingers back in position to play the first chord.
- Now, try and move quickly to the second chord, and study your fingers while doing so.
Now, try fretting the first chord again. Without actually moving to the second chord, VISUALIZE playing this second chord shape. Picture in your mind, finger by finger, how to most efficiently move to the next chord. Only after you've done this should you switch chords. If some fingers continue to pause, or hover in mid air while moving to the next chord, back up and try again. Also, concentrate on "minimum motion" - commonly, beginners bring their fingers very far off the fretboard while switching chords; this is unnecessary. Spend five minutes going back and forth between the two chords, visualizing, then moving. Pay attention to any small, unneccessary movements your fingers make, and eliminate them. Although this is easier said than done, your hard work and attention to detail will start paying off quickly. Good luck!