>>19512617>>19512749What this guy said is what most people do (myself included), you keep a hand on ctrl+Z like it's your lifeline.
Seeing as that can take some getting used to, I recommend this style of lineart, which is messier but seems like a good step off of what you've got going on now,
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https://www.youtube.com/watch?v=Pj9XaD0TGVE[/embed]