Concept artist and creature designer Jerad S. Marantz did some design work on the in-development Captain Marvel movie, which including figuring out what the Skrulls will look like in live action.
Thanks to some illuminating hash tags Marantz uses, I’m guessing the latter could be a Super Skrull, which are Skrulls with genetically engineered extra powers.
The first post includes a picture of what I assume to be a standard Skrull soldier, and if you scroll through the photos, the second picture appears to be a more elite warrior.
After the work was first shown at San Diego Comic-Con, Marantz put his designs up on Instagram for everyone to get a closer look.