Don't over complicate things
Learn to bowl accurately so you can land 5 out of 6 on an a4 piece of paper even when under pressure. Once you can master that, start to look at bowling the Same ball but slightly slower (use when someone is slogging or blindly charging every ball (for some reason people think charging regardless is good spin play)). Then, once you have that get a slightly flatter and quicker one for the dudes who go back or simply don't move and do them for pace basically.
After that, try and turn one of your first six balls to let the batter know you can turn it and from then on, I wouldn't care about it turning or not as you want the threat of spin or not rather than all spin or all not.
Remember, most players have one of here methods at amateur level
Stand there and try hit, be that through the line or sweeping everything like duckett.
Charge every ball regardless
Stand there and get bogged down
Very very few actually even attempt to play it properly and that's probably why teams with two genuinely decent foe their level spinners win so many games.