Practice makes perfect.
Keep working at it, your style is good and you have a great imagination, but let's face it, you're not a flash artist yet. You would benefit a lot from making your characters movements a bit less obviously tweened, and adding a bit more flexibility. You can use "easing" to slow down or speed up the beginings and endings of tweens. This can help a lot to make movements look organic, something that really sets the best flash artists apart from the rest. the"EASE" slider can be found on the properties window when a tweened keyframe is selected.
Best of luck!