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It makes so SO happy to hear this. I really have put more effort into formatting and presentation, and I am so glad that you noticed. Thank you so much for your encouragement! I definitely would want to invest in some good lighting/setup for videos. Thank you so much!

I wonder how it would look if you tried it agaisnt a black background.....like colored chalk on a blackboard khan academy type look. I think it would help certain colors particularly yellow and overall be a bit easier on the eyes. Yellow is a pretty annoying color to use on a white background - https://www.sitepoint.com/10-troublesome-colors-to-avoid-in-your-advertising/ Then again it does say colors are hard to read agaisnt black background, so I'm not sure maybe that is a bad suggestion.

You should also talk with an animator at some point when you decide to try videos, I think that would work quite well.