When I composed the first time , I was about Seven Years old, it had just the One reason, that I wanted to and felt I can do it. I remember that I was rather able to Write the lyrics. But it was a great thing for me.
Now decades later, there is above that wish just to express a Feeling or just to Note a melody the need to find a Piece for a student, where he can practice for example a special chord-combination, a scale, or whatever, that would be good for him. But at the same time it must really find my interest. Then there come more thoughts before I really start with it. The style, the mood, the complexity, or just guitar-technical thoughts, like I Need a Piece in Third fret position in D-Minor. This is how it was the last years.