Nozzle Fan Duct for ANYCUBIC i3 Mega(2018)

Update:2018/11/05
changed the shape for fit more easily.
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Duct for extruder nozzle.
Better cooling for Heat-Sink ,stop cobwebbings.

How to remove extruder cover.
please check below ANYCUBICs video.
http://tbm-auth.alicdn.com/aA15QyFwyu1xgjCVgZ5/YtNOrpLKBPdVjOZpHru@@hd.mp4?auth_key=1535061494-0-0-d259c0cb00f5baa25e21b917c78f49ce

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Please comment ,If you have any trouble or Improvement plan.