can any 1 tell me the way they think is best to write solos,should i be using scales or is it best to improvise?should i have something in my head and tab it out or make something up using the guitar?
all of the above! The best way to learn how to solo is to listen to alot of solos and even look at some sheet music to understand exactly what they're doing. In certain cases (perticularly 12 bar blues) scales are your main soloing ideas. For alot of more ballad like songs, a melody in your head can be great, of course, these are just recommendations, not rules. Improvisation is really tricky, i wouldn't reccomend improv-ing a solo until you know all the ins and outs of soloing (well, not EVERYTHING about soloing, but until you don't even need to think about it).
Steve-0