Continuous line drawing is a fun doodling technique which takes away any element of over-thinking or pre-planning. I first saw Pam Garrison demonstrate this on Creative Bug "Creative Doodling" class. It is as simple as - Choose any pattern (loops, lines, squares), never pickup the pen and continue doodling until it forms a border. Then add a contrasting color in the gaps, hand letter a quote in the middle, add glitter etc. Super easy with a beautiful end result.