Great job! Here's some concrete feedback:

1. I find there is not quite enough contrast between the text and background in the left panel and bottom right panel (and possibly middle far right). Maybe play with the colors/shading a bit to improve this?
2. Given my background in crypto and Gridcoin, I understand that the left panel is criticizing the wasteful energy usage of Bitcoin. However, do you think this is obvious to a general audience? One simple way of pulling all the panels together would be to put this text somewhere:
   "Gridcoin: the environmentally friendly cryptocurrency".

Hope this gives you some ideas for improvement!