What a mess! It's so frustrating to fail or make a mistake in an artwork. Might as well just give up or settle for less than my best... I'll never be able to fix it... It's ruined...
Hey! Stop thinking those negative thoughts! Mistakes, accidents, setbacks, bad luck, whatever! It's just another opportunity for you to push yourself through. Persist. Stay focused. Re-engage. You can do this. Remember what Bob Ross said:
"Ever make mistakes in life? Let's make them birds. Yeah, they're birds now."
Now, get out there and make some mistakes! Or, don't. But if you do, don't be afraid to learn from them or even turn them into birds.