If you can, make a D chord and strum it a few times. Then get a friend or family member to make and strum the D chord. Why does it sound different it's the same guitar. It's in the way the strings are touched and the timing they are touched at. That's all right hand work.
Even if you just deaden the strings with your left hand as you strum different timings. You don't need to make chords to practice with your right hand. Just mimic strumming from different styles of music.
I read an article in a Guitar magazine they were interviewing Joe Walsh. They asked him how he learned to play. He said something close to. I started watching players right hand, everyone's left hand is doing the same thing.
