the white rabbit

Doing my own stuff now and just did an oil change amongst other things.

Now the sump drain bolt and the oil filter got me a bit troubled. Bolt torque is 23 then 32 and filter is 11-ish. But for both I found I could torque them up, get the click but then they would shift on again, then another click then turn ab bit more again etc. So getting tighter and tighter. I guess this is due to the crush washer and the filter gasket.

Anyway in the end I just did them 'so tight' and hopefully not overtight.

Whats the knack here? I probably should have stopped at the first click but the washer and gasket will bed wont they, or would they have bedded at the first click? I dont want to mess with it now otherwise to replace the plug will involve draining the oil and just slacking it will cause a leak now the washer is crushed wont it? I didnt do it 'real tight'.

Just want to get it right next time.