In this lesson, we'll break down the C7 and B7 measures of Example 1.
Notice that these chords use the same shape. This Chet Atkins trick gives the C7 a nice, dissonant sound that resolves sweetly to the B7.
After we look at that pattern, we'll turn our attention to the next voicing for E7 and A7 that occurs in Example 1. These voicings are typical Atkins-style voicings that use open strings to help sustain the chord and give an interesting sound. Notice that the voicings are different, but the fingerpicking pattern is virtually the same. It's important to get the most mileage out of every technique.