The difference between the two phrases is that both can be used in the literal sense (to look in the specified direction), "look to" and "look up to" also have a figurative meaning.
The literal meaning:
Look at that, Henry's taking his first steps!
Look to your left and your right before crossing the street!
Look up at the sky, it's Superman!
Look up to your right, there's a green bird at the very top of that tree!
In all of these sentences, "look [x]" is being used to mean "look in the direction specified." This is the literal meaning of the phrases.
However "look to" and "look up to" also have figurative meanings. You can say you "look to" someone to find answers or advice, for example:
In her first few weeks on the job, Monica often looked to her boss for guidance.
This doesn't mean that she literally looked at him, but that she went to him for advice when necessary.
"Look up to" also has a figurative meaning. To look up to someone is to see them as a role model, or to view their behavior as a higher standard which you would like to achieve.
Tommy had always looked up to his baseball coach. He was tough but fair, and taught the team a lot. Tommy had wanted to be just like his coach when he was a kid.
You can get your answer from here:
http://forum.wordreference.com/showthread.php?t=2059535.
These are very different questions. Let me show you in pairs.
What does she look like? = describe her physical appearance, generally.
How does she look? = describe her physical appearance, right now. For example, "She looks beautiful today, with her hair done up."
Disclaimer-:(answer adopted from source)
Best Answer
Both are correct.
I'm native to a country where "look at you!" means more physical.
Look at you! Oh, God. Your nose is bleeding!Look at you! What happened to your skin?And, "look at yourself!" tends to be non-physical.
What?! Did you say that I'm a moron? Look at yourself!(but I'm unsure if this applies to other countries.)
So, it depends on what you really want to express. Sorry for using a bad word.