I agree with A'man, you should try it out at 10, 15 and eventually 25 yards, as you build your own shooting level.
You mistakes will amplify as you increase distance.
I would not pull the trigger as soon as the sights are aligned, as by the time the trigger is pulled, sights have always already moved. Trust your wobble, and squeeze the trigger like you would squeeze a lemon. With practice, wobble will reduce and squeeze will improve.
Enjoy your pistol and your shooting!