Einnor,
I think if you can get that dog to lick up that slide and kinda lube it up you might have something. I guess you're interested in blues so my input is to find something you like to listen too and learn to play like it. The best blues is of the moment and may be different every time you play it.
Just try to make the sounds you hear on a favorite CD and while you're trying that guitar will begin to talk to you and tell you what to play.
Gene