I noticed your pivot foot is off to an angle, with your heel pronounced, and the instep not flushed with the leading edge of the rubber.
For some pitchers this really impacts their entire muscle pattern(s) and coordination routine(s). Yes, it's a small thing I know, but, if you think about it, this small yet dynamic setup with your foundation, actually forces resistance to everything upstairs .. pivot leg, hips, trunks coil-n-uncoil, shoulders, and so forth..
I would suggest that you video yourself with your pivot foot in the opposite extreme - with the heel against the rubber but the front of your pivot foot pointing outward. Then, progressively work towards a flush placement against the rubber. In other words, progressively little by little, move the front portion of your pivot foot closer and closer to the leading edge of the rubber. Go through, oh say, 20 pitches at one-half game speed. Video from the back, not the side. Video from the back is superior when analyzing form and posture(s).
Somewhere in that routine you'll find a "ah, that's it" kind of setup that works for you. Otherwise, you look pretty solid.
As you progress and find a comfort zone, select a pitch that's your mainstay, a pitch that you really feel comfortable with. See if that pitch still gives you that desired result(s). Then, select your next effective pitch and so on. Working hand-n-hand with your setup and pitch inventory should move you along, fitting into the role that your pitching coach wants you to fill. Be sensitive to that role and be mindful of your personality filling that slot.