But what about if you're NOT a young guy? I'm old, and I'm toying with the idea of playing cricket again for the first time in decades, and bowling off-spin bowling seems like the sensible thing to try and 'specialise' in.
Remember to bring your bowling arm down on your none bowling side. You give a great example of that in your kneeling drill, Your right arm coming across your body and down.. Bowlers who used to bowl seam with a chest on action might find this REALLY hard to do. Side on seamers may find it easier. Why? Because although you are putting revs on the ball with good wrist and grip, if your arm does not cross your body the seam (and the spin) will probably not be going down the pitch or towards leg slip, it might well be spinning "back on itself" with the spin direction towards mid wicket or even mid on. Effectively putting backspin on the ball. With that sort of rotation you will rarely get spin (you won't get much turn) and you won't get drift or drop. In fact, like a seamer who runs his index and middle finger down the ball at release the ball with travel a little further. It's MUCH easier to hit as a batsman. So bring your bowling arm across your body. This will ensure that at release the seam and spin direction is canted more towards leg slip, possibly even straighter (over spin - great for drift and drop - see Nathan Lyon's videos on this) Pivot, turn, roll the shoulders. There is more than one way to do this (though the pros always say pivot on the hip and body core) Video yourself at release. What your hand does probably isn't what you think it does. For instance the ball rolls off your index finger slightly to the right. Your hand usually finishes palm down , and this can seem entirely contradictory to what your mind tells you is going on. You might think "But I'm letting go high in my action and surely the ball is rotating with the seam pointing towards leg slip"... then you check the video (or see it yourself with a two coloured ball) and realise you are bowling back spin. That's because you are too open at delivery, bring that bowling shoulder into play, get it out in front and the arm across to the none bowling side of your body. You might end up facing 180 degrees away from the standing umpire...that's fine. After release turn back and get ready for that caught and bowled chance :)
Hi there, I am happy to help, please upload his bowling / batting video to RU-vid as a private video and share the link with me, I will then reply with my feedback. Thanks.