I think your Dalek is looking fine. 
The only observation I have, and it's probably not fixable at this time, is that the shoulders on yours have kind of an acute slope on them... on the real Dalek, note how the profile up from the skirt kind of blends into the shoulders, but on yours it kind of breaks inward... yours has kind of a "zigzag" look, where the real one is kind of "conical"...
If you look at the central axis of the Dalek, this means that the real one has a sort of tank-like visual stability from all angles...as it moves, it seems perfectly upright and straight.
Also watch the angle on the front of your "gun arm blocks", which is angled on the real one and vertical on yours.
- k
The only observation I have, and it's probably not fixable at this time, is that the shoulders on yours have kind of an acute slope on them... on the real Dalek, note how the profile up from the skirt kind of blends into the shoulders, but on yours it kind of breaks inward... yours has kind of a "zigzag" look, where the real one is kind of "conical"...

If you look at the central axis of the Dalek, this means that the real one has a sort of tank-like visual stability from all angles...as it moves, it seems perfectly upright and straight.
Also watch the angle on the front of your "gun arm blocks", which is angled on the real one and vertical on yours.
- k