It is a confusing time to be a brand new white belt. Often times, you are told not to "spazz" out, yet when you go too easy, you are encouraged to be aggressive. The ultimate goal is to become more technical, and you should always remember to practice what you KNOW to be technically sound moves.
If you do not know what to do from a position, and/or get stuck in a position, it is always better to ask someone more experienced what to do. Practicing the WRONG thing over and over and over will only develop bad habits that will be hard to break later on.
Finally, remember that even the most basic of technique that may appear to be 3 steps can be broken down into 20+ by a more advanced practitioner. Ask a lot of questions! It helps!
Now some de la riva sweeps from the mendes brothers. A display of the highest possible level of technique in my opinion.