What style would suit me??

I have a square head, I'm rather pretty (I'm not trying to boast just trying to give you an idea). Err my hairs collar bone length and its like white-ish blonde but I have bad roots at the moment. I have hair extensions that I can dye, long hair and a big side fringe suit me but I want like a darker blonde. Maybe highlights and lowlights? I'm really pale, like seriously pale. So I could get away with a darker foundation I think if I dyed it a sort of darkish golden blonde with highlights or something. My sisters stunning, she has dark brown hair she wears very dark foundation but it suits her and she looks gorgeous with smokey eyes, her hairs about armpit length. What can I do, I want a new look?What style would suit me??
for your face shape you do sound to have a suitable fringe, some layering thru the front will disguise the squareness of your face. as you are very pale a darker foundation would really not be a great idea as milky skin is so elegant, warming up your blonde with golden tones sounds like a really good idea, and keeping hi-lights going thru will break it up, this is not somthing you can acheive easily at home. don't go darker as in towards browns n blacks as u will look even paler but toning your blonde down a shade or two and warming it up a few tones will bring colour to your cheeks. pop to a salon for a consultation as they can match up your skin tone to the perfect colour.What style would suit me??
Well a picture would be nice.