Belive me, nobody out there is orginal (maby Hendrix).
I think it´s impossible to find your own style if you don´t play others stuff.
But also keep in mind that when you learn others solos, don´t larn it 100% ´cause than you are a 100% copy of the orginal. Belive me I have same problems when it comes to do my own solos but it´s clearing up ´cause when I´m learning others solos I come up whit lot of my own style and also new runs, tricks, sweeps etc. I think that learning faster solos is better ´cause you can come up more whit your own stuff when the notes are just flyn´ by than slower solos.
Along with that, don´t be afraid of stealing some licks from others (just do it your own way so that they can´t recognize it easily) and don´t be afraid of slowing your solo down a bit ´cause it´s than your style and feeling comes out and that´s somthing you´ll need to work by your own.
Also, I think that singing a solo in your head and than translate it to guitar is great ´cause that´s how you´ll find melodies and than when you want to be nasty, use some dirty tricks you already. Just make sure that they fit of course.
Dejan S. No speed limit