I play around the 3.2-3.6 star level, and I see streams popping up more and more often (not long, just short bursts). Should i just keep playing to get better at them or actively practice them?
If you play a wide variety of maps you will learn streams naturally over time. When streams start feeling more natural (you aren't like omg a stream what do I do) you should start focusing on them more. At your level streams are just a waste of time.