yoyo try
try barring the 5th fret and using your 4th and baby finger to make an em shape on the second fret up from the bar and use a DUDUDUDUDU........ strumming pattern but muting all the strings on the down stroke (lifting the chord from the fret board slightyl) and only hit the first 4 strings on the up stroke (with the chord back on the fret board) this will give you a SKA kind of sound. quite funky