Using a baby wipe is a really cool painting hack. You're able to make acrylic paint look like a wood stain -- for a fraction of the price. Wood stain is expensive and it's not worth it to purchase it just for a simple project. The baby wipe applies a thin layer of paint with extra liquid, so you're able to spread the paint out in a way that you can't when you're using a paint brush and acrylic paint. If you don't have any wet wipes in your home, you can wet a napkin or paper towel and then use it to apply the paint. That will work, but a napkin or paper towel is less durable than a wet wipe, so you run the risk of it falling apart and leaving debris behind on your frame. Just be conscious of that and wipe it away before it dries.