There is lots of nice infomation above but try not to think to much. If you start thinking about doing a perfect landing it's to much, just try and drop it with the minimal of fuss and control inputs ( the plane is better at flying than you are if trimmed).
Your landings will hit a peak when you solo then the quality will drop abit when you get an eye for what "will do". Then as you gain experence they will start improving again and you be able to handle larger x_wind vectors.
The most important part is getting the plane trimmed and flying itself down the approach so you arrive at the correct height and the correct speed. Your only there to suggest what the plane does next, if you try and force it into a state which has to much energy or to little it will bite back.
And if at any point you feel unsure or it dosn't look right, go around, why pay for a sh*te landing.
And don't worry, we all do crunchers occasionally. Learn and enjoy, if you get stressed it can only make things worse.
MJ