Honestly, I can't tell what my oldest drawings of Cory are. Since the quality of the artwork fluctuates so wildly, just looking at them doesn't tell me much. So, I'll basically just put these in whatever order I feel like it.
        
So, we'll start with some low-detail sprites.
   
The second picture also has sprites of Roxanne, Sesa, and Starla.
      
And next, some head drawings. The middle one is Cory's original RAU gallery entry picture from the old series.
   
Two sketches of Cory's Lunar Token weapon. One is solid wood while the other depicts a gold ring attached to the crystal.
And we finally start to get a complete concept on paper. The proportions on this one are extremely awkward. I surmise it might be one of my first full-model Cory sketches.
   
The left one is similar to the above, but has much better proportions. The left drawing is a large print based on the early model art.
   
Rejected ideas: The right sketch shows Moonshy and Cory together. Cory is wearing a bandana. She is not wearing this in any other drawing I could find of her. Although Cory's magic is a combination of Dark and Fire (which she inherited from her parents), her possession of the Lunar Token gave her access to Lunar magic, which explains her ability to control monsters. The left drawing of Cory has a color scheme closer to that of Nucleo's. I apparently rejected that palette because I really didn't want it to seem like she was dressing the same way as her father.
   
Some more random sketches that were not drawn for specific comics. The one on the right is actually from a college art sketchbook.
   
I suspect the one on the left is one of my earliest drawings of Cory, probably meant to show her height in comparison to Nucleo, their family resemblance, and her alternate Dark Mage cloak attire. The right image is Cory tucked into a spinning roll, but it was water-damaged in an apartment fire.
   
Left is a pog done for an art project, but it was also water-damaged. Right is a Cory sprite riding on a nondescript dragon's head, drawn too unfortunately close to the edge of the paper. Perhaps meant to display Cory's power of controlling monsters.
Old rough sketches of Tomi, Chester, Jack, Nucleo, and Cory. Cory is taller than Nucleo, so the suggestion is that she's older here. Looks like Minerva Project era.
Can't find Cory is this group sprite picture? She's on the left side, near the middle, just to the right of (Dark Mage) Nucleo.
   
Non-Canonical Stuff: These two sketches depict a sprite of an adult version of Cory dressed as a Final Fantasy White Mage. The reason I did this is because I named my White Mage "CORY" the first time I played Final Fantasy.
   
And these drawings of Nucleo and Cory in baseball uniforms were done around the time I was playing Extra Innings. I named two players on my custom team "NUCLEO" and "CORY". The first picture of Cory alone has suffered a lot of wear and tear.
Cory McRaven Storyboards 1