F
To play the F chord, use the first, second and third fingers of your left hand as shown in the diagram. Strum only five strings. The first finger bars across the first two strings. This is quite difficult at first. The F chord is easier to play if you position your third and second fingers before positioning your first finger.
Rhythm Pattern
Remember that you can use any rhythm pattern you like on any chord progression as long as they have the same time signature e.g. * time.
C7
To play the C7 chord, use the four fingers of your left hand as shown in the diagram, and strum all six strings. The C7 chord is a C chord with an added Bb note played by the fourth finger.
Rhythm Pattern
Use your second finger as a pivot when changing between the F and Dm chords. Use your first and second fingers as pivots when changing between Am and C7.