I have experienced the process you're talking about, although to some degree I feel it's symptomatic of a lack of skill. I start out with some kind of inspiration in mind, but end up with a compromise between what I can do and what sounds good when I fiddle around with things. Part of me feels dissatisfaction that I don't know which knobs to turn to get what I want, but I suppose that's just the normal learning process (albeit less structured than those I have gone through in the past, which is its own obstacle sometimes).