Techniques for leaving the whites

Well, what can I say? Clean work is not one of my strengths. I also hate masking fluid and find it to be more of a curse than a blessing. In fact, most of the time I feel like throwing it against the wall when I think it might help me and then it ruins the paper or doesn't do what I intended. As always, a super helpful tutorial that shows me the options we have. Now it's time to practice and apply.