Sorry about that I should of not typed that I did'nt know you have'nt gotten to the end of season 5 of Supernatural it was kind of obvious in a way those little things how he could see more of his visions farther than Sam.
That's a sketching of Sam & Dean's father John that I did today it took me 1 hour to do how John looks sad thinking about his lost wife Mary which was sad that she was killed by the yellow eyed demon Azazel.
In a way sending Dean back in time there was no way his parents could get out of making the deal it was there destiny and there children in a way were destined to be cursed.