Turn 1, just slightly of apex there, you could have just kept it that little bit tighter.
Carosel or whatever it´s called, i really don´t know but maybe keeping it just a tad tighter midway so you get on the power a tad earlier.
Same with the left downhill hander that comes after, you are probably 1-2 meters of the apex there. which means you have to wait just that bit longer before you can get on the gas.
Same with the uphill right hander, a little bit tighter will allow you to get on the gas just that bit earlier i think.
And the last turn, still a tiny bit of road between you and the grass there.
Oh and btw, do you use autoclutch? The star mazda you really don´t need it, just flick the paddle and it upshifts.
For downshift i use a hint of throttle in every downshift but i know people who do not use any throttle during downshifts.
For me it makes the rear to nervous so i guess it´s preference.
Just wanted to say that i am in no shape or form quick in the Mazda, been a long time since i drove it so i´m just trying to help as good as i can.