Hi there, is it theindividual lashes that you are doing or the semi permanent? I do alot of the individual ones for clients who just want a quick glam look and that can be removed after a few days, i always find it best jsut to keep getting the client to open there eyes as quick as possible when the lash is on, that way u can check theres no glue on the lower lashes or on the clients eye, if theres any adjustments neding to be made then the glue is still tacky enough to do so and then again you just keep getting the client to open and close there eyes, i always find that saying to my clients i am going to be saying this to you alot throughout the treatments that they dont think your crazy lol and just always keep asking a client if they can feel any glue on there eyes as they can usually feel it, and also just keep the eye stretched when opening it and this means that you dont get any glue strings if theres excess glue, hope this helps xx