Attaching a lash extension from the side is not advisable. When applied correctly, eyelash extensions should be attached to the base of your natural lashes. This provides better stability and a more natural look. When attached from the side, the extensions may appear unnatural or uncomfortable, and they are more likely to fall off or cause damage to your natural lashes. The key to a seamless eyelash extension application is to carefully choose the right length, thickness, and curvature for each individual extension and to strategically place them on your natural lashes. This meticulous process ensures that your extensions blend seamlessly with your natural lashes, creating a fuller and more attractive look.