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Thanks, yeah I totally agree with you, that way a well done drawing could be finished in 15-20 minutes if one knows what to do.

15 to 20 minutes? The possibility is low. I can't even complete my outline sketch under 20 minutes especially when I'm doing a know portrait.

this one took me 22 minutes exactly, no outline nor reference, just sketching with the mechanical pencil. drawing fast is great if you need the day for something else. haha

All right. Good for you.