I have enjoyed using my palette knife to work on staying looser. It is so satisfying when you lay down a stroke and it is even more interesting than what you hoped for. I would definitely recommend using a palette knife if you are trying to loosen up. I love my rosemary brushes and will always use them but loving the knife as a tool and change up. I particularly like the Italian brand RGM that is widely available at art stores. Play with something new this week.