When I try this hairstyle it doesnt stay?

I have straight wavy hair.and when its damp I put on a bunch of moose and I squish all of it to make it wavy but I wont stay I tried adding hairspray but it wont stay.i tryed gel but it didnt work I even tryed gel n moose but nothing is there anyway I will be able to do this hairstyle I hate how it wont stay.i see girls that do it n it looks pretty.is there any chance I might be able to pull it off?