Alright so since there was no more entries I think I'll close it now.
Before I announce the winners I'd like to say that I really appreciated everyone's entries and that I loved all the different styles and approaches to the species.
Now...
First Place
eleutheromania
I was amazed by the amount of work and time you put into your lineart and oh my goodness it's just gorgeous. I love your style and the adult cat's head is so darn cute! Thank you so much for putting up with my pickiness about cat anatomy... x'D They're perfect and I'll for sure be using them. <3
I'll only be keeping the first place entry!!! As for the rest... you may remove the portals and the background and use your lines as a regular cat lineart, or even sell it, I don't mind. c:
Second Place
astral.
Portals were a bit too simple for me, and the chest floof? The pose is adorable and it just reminds me of a bouncy lynx with small paws, haha. Overall I still really liked the lineart and I feel it deserves second place. c:
Third Place
Softea
Your entry was really soft and cute, but a bit too cartoony and simple for me. Still, I really adored the kitten lines!
Honorable Mentions
irina
I loved the portals and the simple but sharp lineart. I was looking for something a lil more anatomically correct and realistic but thank you for your entry anyway!
endless shelter;;
I see that you put a lot of work into your lines, and although it wasn't really what I was looking for I still feel it deserves an honorable mention. c:
I'll send the prizes ASAP~ check your trades. ^^