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I don't know about this so I didn't mention. but you are also using the wrong source. I used this one

www.etsy.com
I purchase this drawing book from there so technically you can't downvote me.

Whether you purchased the drawing book or not is irrelevant,
you still need to cite a source since the design/motive/composition is not yours.
Which specific source you used is also irrelevant.
Have a great day.

I'll take care of this, thanks..................................