Put a capo on the fret and play an open shape. It sounds as Csus2.
3fretAsus2 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 Csus2 chord
C suspended second is built from 3 notes: C (1), D (2), G (5). The lowest note you play should be the root, C, highlighted on the diagram. You can play it in 12 places on the fretboard. The first shape is the most common; higher shapes make smooth changes easier in some keys.