Last one to post in this thread wins!

I have a question for ya Murray since you know about cement. My garage floor I did the cement work and defiantly not a professional. Rained on it when it was still wet but not a heavy rain more of a sprinkle and left little pockets of holes and is dusty all the time.
Question is can I sand it to smoothen it out and was thinking of painting it but found a wax for cement that sounds better than paint.
Thoughts???