Dont have many free time but i tried doing something.
I added some more body features on them (like the tails), but in general, tried to maintain similar to the original shadows.



1º shadow – Bearmer (beaver + armor)
Those beaver like pixpal love collecting all kinds of wood they find on pixpal real. They somewhat addictive to theater, pretend games and role playing games, so they construct all kinds of fun disguises and tools with the wood they collect to play around.
Color 1 – Brown – Soldier Bearmer with shield and sword made of wood.
Color 2 – Gray or black – Bearmer with dragon disguise
Color 3 – Magenta or Purple – Bearmer with a princess disguise, maybe?

2º shadow – Chameleaf (chameleon + leaf)
A strange chameleon that live in forests, they losed with time they hability of camouflage, so they wear leaves and hide on plants. In spring, they start to wear colorful flowers and berries to attract partners. On winter, they wear tree stumps, branches and snow when the leaves of the trees are scarce.
Color 1 – Green or lime – Normal leaves
Color 2 – Neutral - colorful version with flowers and berries
Color 3 – Brown, white, cyan, blue or aqua – winter version

3º shadow – Cuthieres ( cuttie + amphiptere)
Those tiny, cute, fluffy amphiptere have hair and feathers constantly growing, so they general need special care from they owners, turning them famous models on hair style contests. In nature, they fur is generally a huge mess, making them resemble big pieces of tangled wool with wings.
Color 1 – White, orange or Brown
Color 2 – Rose, Magenta – Naked neck version
Color 3 – Neutral? Dont know, but i imagine this one being a huge mess, something like a sheep but full of trash sticked to their fur.


Other sketches, this one based on the color 2 descriptions:


I did not make sketch of color 3 due to lack of time, but i hope the description can give a idea about how they are.