Software suggestion: Inkscape, because it's free and user-friendly https://inkscape.org/en/download

Thanks, Samet :)

 

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Parts of working process:

 

drawing made by ISMENA DROŻDZYŃSKA  from Pobiedziska, Poland

 

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https://drive.google.com/open?id=0B6H4jKnQ-BT0cFRxam1sV2QtXzA

 

 

 

  

 

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