Put a capo on the fret and play an open shape. It sounds as Csus4.
3fretAsus4 shape
Strumming patterns to try
↓↓↓↓Four downsSteady, for learning changes
↓↓↑↑↓↑Folk / popThe everyday pattern
↓↓↑↓↑BalladSlow songs, 3/4 or 6/8
↑↑↑↑Reggae skankOff-beat chops
About the Csus4 chord
C suspended fourth is built from 3 notes: C (1), F (4), G (5). The lowest note you play should be the root, C, highlighted on the diagram. Above you will find 12 shapes for it across the neck. Learn the first one, then use the others to keep your hand close to the next chord in the song.