Graphic novels....

I read a Graphic novel yesterday....but don't feel as though I really read it properly...it was a graphic novel version of Sleepy Hollow so I knew the main storyline anyway....but in saying so I found it quite challenging to read....I just can't focus on reading the text and the pictures....and I think I miss so much of the story in the process....I did enjoy it but I don't really think graphic novels are for me....I find that visual literacy thing just a little too challenging....