I always start at the outside corner of my eye first. First I pull my skin taut (so it's easier to line the curve of my lash-line). Then l use the side of the brush (not the tip) and slowly drag at an angle to line my lash-line. I do this is multiple strokes, and do a finishing stroke over the mini-strokes. It is SUPER easy to fix any mistakes with a Q-tip. If the application of the line is too thick, quickly wet a Q-tip with water and rub it over the top of the line (just enough so your barely thinning it out). I hope this helps!