I just tried a groupon for last extensions and had a horrible experience, clumped hard lashes, they looked terrible and not natural at all. I got them our a week later and they pulled out a bunch of my natural lashes with them (( thankfully I have about 4 months til the wedding.
From what I have been reading, the skill of the person has a lot to do with how they look so I am hoping some knotties in Houston have some specific lash extensionists they can recommend because I really don't want that to happen again before the wedding!