The file version of the logo delivered to the client, for the purpose of being made into stickers.
The design process begins with a rough sketch of the brain, drawn on a Wacom Intuos tablet with the blob brush tool in Adobe Illustrator. This was never intended to be a part of the final result and is just a way to establish a general shape that can be refined on with smoother brush strokes.
The first draft originally did not feature the text you see above, but the client decided they wanted since it was a part of their old branding. I believe this decision was a good one since it adds a familiarity to the new logo and shapes it into a square, which is great for icon purposes.
The client had changed their mind on how they wanted the brain to look. They wanted a less detailed approach, which I agreed with them since the first draft's brain would look quite cluttered when shrunk down to be an icon on Instagram. You would not be able to decipher all the ridges of the brain since that detail would be lost at such a small size. This version of the logo also has the Instagram handle in the corner for merchandise advertising. These are stickers, printed by MakeStickers, that feature the Instagram handle for the purpose of advertising the client's page.
A screenshot of @neurofact's profile with the logo in action. This version does not have the Instagram handle at the bottom as it is redundant and breaks the square shape.