First off, I Google'd "How To Paint Over Wallpaper" to see what other people are saying and Oh My Gosh! All of the top 10 results and videos are terrible and full of bad / regurgitated advice! I'm going to address everything that is wrong with them below and tell you how to actually paint over wallpaper, so read on for real-world advice from someone who has painted over wallpaper many times in my career.