I don't think you should ever tie your hair back when drying your fringe. It results in your fringe looking 'stuck on' like Sali's does. Brush it randomly while drying but brush a large chunk of the 'rest' of your hair forward too. After the front half of your hair is dry the sides and back half will fall into place and your fringe will be nicely framed by the refs of your hair. Then rough dry the back half then blow dry it all.
Her fringe needs a good cut too. Long is great but when too long it tends to hang in chunks rather than as one because you naturally make gaps in it to see through. Sali's is usually hanging in clumps
Also, what's with Sali's Middleton eyeliner?! Hate it, sorry.