Flick shots happen extremely fast and completely rely on reflexes. This is why I suggest you train your flicks within CSGO instead of in an aim trainer, because you want everything to feel the same while training this precise skill. So it is important to learn how to train flicks in csgo specifically.
In fact, if you flick only an inch too short or too far, you will miss your chance completely.
That is why it is very important to train your flicks in a way that simulates real matches as closely as possible. Once I started training my flicks by using CSGO aim maps, I saw great results even within the first week. These results were not only improved flicks, but improved accuracy overall. Even with the AWP, my flicks improved. Before I used to miss easy shots, when the enemy was standing still and usually looking away.
Now my shots are completely accurate and very consistent on the AWP, even when it comes to shots that don’t require flicking. CS:GO requires a different type of aiming style than Overwatch.