the clients natural lashes are shorter in the corners so when they want a flick on the corners i find it quite difficult. There just dont seem to be enough natural lashes to stick the extenbsion to, to make them look thick.
You are absolutely right in what you are saying. If the client's lashes are naturally shorter at the corners, it is impossible to put longer extensions on and have them last. (Although this is, of course, what the client wants)!
To get the most natural, longer lasting extensions, the ideal way is to put extensions on that are 1/3 longer than the natural lash. So if the lashes are shorter at the corners, the extensions should also be shorter.
However, clients want you to give them what they don't naturally have!!
I find the best way to deal with this is to explain. I tell them that I can put longer extensions on the outside and although it will look good, it won't last, and may damage the natural lash. It is then up to them if they want to go ahead. If they insist on longer, I would use a lighter lash to reduce strain on the natural lash.
Another option is express lashes but that is a whole different thing......... LOL
and yes, you can buy flirties glue from wowfactor no probs. I love it!