First thing is you should really change up the pictures.
Photo 1) zoom the thumbnail in a bit more, keep all three guys but make sure it's not too distant. That first photo is the number one thing that will draw a girl into your profile. Good color and composition though, it'll work.
Photo 2) You look threatening and like you're posing...in a kitchen. Have a friend take a photo of you looking away from the camera talking to another friend (or just act like you are) OR a photo of you doing something funny/interesting.
Photo 3) You've got the right idea, maybe a little close...but not bad.
Photo 4) She might be your best friend...but she has got to go. A profile isn't about making your friends feel good cause you care...it's about the feeling the girls looking at it get.
The key thing about any PUA is to demonstrate that he has OPTIONS and that we are selective. Saying that they should "just ask you questions

" is super AFC. Also...no emoticons unless you're using them purely to be funny.
I like the about me mostly. Change to "Awesome Uncle incredible friend" we want to stand out with the words and not blend in with "good."
As a 28 year old, saying you're looking for 18 year olds looks creepy. Narrow the age range a bit (18-45 is excessive) and show you're selective. That being said...you want to hook up with a Cougar/barely legal, she can still message you, and you her. It will just give you some more material to work with..on how she isn't your type/age.
Overall though, not a bad profile. I'm just being picky to try and help.