I'm wondering how you all go about composing your melodies. I often see people talking about the scales and staying within the scale but for me personally I like to work with chords. I often ignore the key and scale that my song used when composing and just focus on the chord I'm on at that spot (or if I'm feeling lazy I just use the Blues Scale, that guy works with anything. That's an aside though). Hell, when I want to use an entire scale I'll just use a 13 chord.
For me, the scale builds the chords and the chords build the melody. I want to know how you guys go about composition.