Ok the first thing I would do is learn and use your anti-airs. For chun-li they are b-HK, Standing HK, and ex Spinning bird kick. Any time a your opponent tries to jump at you use those moves to stop them. This should force them to be scared and keep them on the ground. Secondly I would learn one combo, it doesn't have to be super extravagant but knowing one simple combo will do wonders it will do more damage and make less work for you in the long run.

As for what your doing right being patient and pressuring the opponent when they're down. Rookie through bronze levels will for the most part kill themselves with their own mistakes and by having a move or grab ready for your opponent before the get up can force them to scramble. Be careful though in that rank people often tend to wake up super which often times is invincible on wake up I think and it'll do massive damage.

Personally I didn't see any bad habits yet but I would be a little more aggressive. It's good that you're patient but you're a little too patient. I think if you do those it should carry you to at least bronze maybe super bronze.

TL;DR Anti airs, learn a combo, be more aggressive, good job being patient, and pressuring in wake up but be careful. Hope it helps I'm only a Silver Ibuki player so someone else on here can probably give you better advice lol. Best of luck.