The standard method for creating hybrid lash sets is to mix half classic lashes or flat lashes with Promade fans. Start by applying thicker diameter lashes, such as 0.15 or 0.20 classic lashes, evenly spaced out. When about half of the natural lashes are covered, start applying volume fans to the remaining lashes. It's that simple! During infills, maintain the ratio by replacing the fallen-out lashes accordingly.