4/4 time has two natural accents per bar(sometimes called "strong beats") wheras 3/4 has only one,the 1st beat of each bar.The typical solution is to play the root of each chord on the 1st beat of one bar and the 5th on the 1st beat of the next,this gives the familiar country ballad sound.Try this: for a C major chord,play a quarter note c on 1,rest on 2,then G A G on and of 2,3,and and of 3 respectively,then back to C on the next 1.See what you come up with with this as a starting point.