Need Help For A New Haircut

I need some help over here. I have been struggling with my hair for such a long time now.

So I hope you guys can help me out. I have thick, wavy hair and it's standing up everywhere on my head. ( See first picture). (This is a bit older picture. I got it a bit shorter now, on top of my hair it stayed the same, only 0.5 inch shorter now. And my hair on the sides are much straighter. )

I'm trying to get something like the second picture's haircut. But so far I can't pull it off.

I dont even know if its even possible to get a haircut like that. You guys know if I just need to put some mousse or something or cut my hair diffrently ??

Btw I think that this hairstyle from Dicaprio is really cool looking.

     

  1                                                                                       2