My model about helicopter

Hi steemitjeters
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You know i am working for sir @dimimp this is my second model of helicopter i draw this model in round about 1 week .today my model is about helicopter .

*What is helicopter
A helicopter is type of rorocraft
Helicopters were developed during the first half century
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I draw this model to follow below image
Source google
and take some help of the app

i am sure you will like my model