oh. Well then. Here are a few quick tips for... who'd you say? Lux?
Lux can play the lane VERY safe after she gets a little bit of AP. Just blow up the minion wave from range and walk away. Try not to give him a chance to get close.
Early game, make sure you try to hit some autos on him whenever he tries to farm. If you can get your passive in there as well, E is pretty easy to land, then thats even better.
Level 2 you have to really pay attention to your minions and your spacing. Try to keep the closest minion to you between you and Yas so that his dash through that minion has to come straight at you. This makes landing Q very easy.
After level 3, you will have to watch out for him hard engaging and trying to predict your Q with his windwall. If you have the mana, try baiting the wall just by throwing a few Qs at him. If he doesnt have his wall, he will not likely go all in unless you are badly out of position. But you should be able to land Q if he doesnt have WW.
There are some basic lane thoughts. Hope that helps :)