Question on Recovering Dash Pad

Question for anyone that has recovered there dash pad. I have a 74 Dart that my son and i are working on cleaning and painting on the dash. We removed the dash pad and im thinking of recovering it with vinyl. Doesn't have to be perfect just driver type style. Not sure if i should just recover right over old cover or try to remove the old cover. Never messed with one so any info is appreciated. Thanks J.R.