The water style: water shock wave works by apparently clasping your hands and making a vortex of water appear around you, now it works that you can make it violently lash out in an all around manner meaning in a circle or you can make it lash out towards a intended target.
for the second jutsu it works in the way that after the user goes through the handseals and calls forth rain infused chakra from clouds anything that the rain touches is sensed from the user I'm guessing, so for example if an enemy was somewhere hiding or you wanted to use this technique for scouting you can call upon this jutsu to know where they are at with the senses this jutsu provides.
And for the last jutsu the water style water: prison jutsu after either having a clone or spitting out some water the user goes through the hand seals and makes a full rounded sphere that is inescapable and the enemy trapped in there can't move because of the water's high density, apparently the downside is that the user must remain at least touching the sphere with one hand.
for my move I shall use the second technique
As I close my eyes and wait for you to hide I start going through the hand seal's bird, rat, ox, monkey, rat and snake after I finish rain cloud's form over head around the field and start releasing raindrops, which are connected to my senses as the rain falls and hits you I feel your chakra obstructing my rain which leads me to your location behind a couple tree's south of me.
(How'd I do on explaining the jutsu's and the one I did)