How to make an interesting piece?

Hi, can you help!?

buenos.kz on this website there is a canvas element (I'll paint my girl, the effect before and after) so you pulled codes from there and files. but it doesn't work like that. Can watch file? or recommend any article to make such

rgho.st/6t487sttQ
July 2nd 19 at 17:30
1 answer
July 2nd 19 at 17:32

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