Got it! I got the second one. It's Jurgens. Booster Gold #16, page 4, panel 6. I kinda remembered the way the sky looked. The funny thing is that it's a great portrait, one of the greatest, but it's surrounded by so-so art by the same artist. He's also not making such a serious analysis as it would seem. He's only thinking about trusting Booster's sister.
Here's another good one from the next page:
Now I'm only missing the info of the irst pic.