Whens the earliest to tell if the girls are flowering from the switch??

Okay so i switched my girls 3 days ago and was just wondering when they will start to show signs of flowering? The branches have now started to grow jaggedly instead of straight up if that makes sense. Also on the top of the branches where new growth is im sure it looks like pistils are in there to is this right??

Also i gave them a trim last week before i switched them to get more light to the tops...is it ok if i give them one last hair cut around the bottoms where there is going to be hardly any light?? Thanks alot everyone!!

if plants are mature the pre flowers shold start to show very soon

Look where the preflowers grow, between the stipule and new branch. Look for them at each node of the main stem.
like near the middle to the top section.

cheers lads,

the pre flowers have been there for 2 weeks in veg so i no there all girls. Just want to know the signs of flowering, does it start in the new growth? im sure i saw pistils in new growth before? i might just be getting to excited! ha!