I've looked at your model and gone through the timeline a number of times but I have a hard time pinning down what exactly you are going for.
I would design around a general volume that needs to be just large enough to contain all the mechanical pieces, but I would not start by detail designing mechanical interfaces. I would start with the exterior shape first.
In your imagination, you need to break a design down into primary, secondary, and perhaps tertiary shapes and surfaces.
The large surfaces are the primary surfaces. Decorative fillets are secondary surfaces and should be applied late in the design process. your design is a somewhat unorganized mixture and that is the reason why there's no distinct flow recognizable.
Can you create a hand sketch in pencil & paper to show what shape you were trying to achieve?