Masking fluid is a very good and even superb solution. It's true that some people find it problematic to use, but in reality, it's a good compromise. In my experience, I advise keeping your old brushes that you don't use for masking. You can even use other objects like toothpicks or metal spatulas. Some people find that it sticks and tears their paper; the solution is to add water, dilute it, take a small amount in a small water bottle cap, and add a few drops of water. This way, it's not too sticky and it's fluid when applied. It's also easy to remove once the watercolor is dry, with a soft eraser. I hope I haven't gone on too long. And thank you to everyone, and thank you to Marith. 🙏🥰 "" det är mitt "" 😂