Such an awesome game for the Jam as it fits perfectly in theme! I like that the elements for the diferrent body parts aren't clearly label or of the same cateogory as it makes the creature building more of a puzzle. Other games I have seen that feature creature builders would simply place all the parts under categories like 'dog' or 'dragon.' However, assigning parts to unexpected names, it makes the creature building part much more of a fun puzzle, as I had a lot of fun trying to read through the parts' lore to figure out which part would be best for the client.
I also enjoyed the fun dialogue all the teachers had to say as it made more more engaged in reading what the clients want for their Creechpo.
Overall, I had a great time playing Creecho Creation Lab! My only criticism is that maybe in the manual, the main aspects of each part could be highlighted so that it can be easier to refer back to when I'm switching between the creature creator and manual. This is just a small nitpick, as overall your game is great with visuals, theme, and unique puzzle approach in the typical creature builder-like games.