So I decided to make a bit of a guide for others to make their own Felera's! Didn't want/need to draw everything so more info is below. If you make one let me know privately I'll love to see them. Or if you have any questions about your idea feel free to ask.

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Eyes:
~ Eyes commonly are various versions of brown, hazel, blue, green.
~ What ever the iris colour is, the sclera is a lighter version of of it.
~ Vibrant eye colours are extremely rare.
~ Non normal colours are not aloud!
~ Red eyes may come across in albino people but its still not very common in humans so keep this in mind. And albinos aren't common in the Felera species.

Legs:
~ Digitigrade legs are very common but some enjoy the more human anatomy legs with hooved toes instead.
~ Tails match with the animal the legs come from.
~ You don't need a specific breed of the animal.
~ If you aim for exotic legs (eg zebra, giraffe) then the Felera should come from a place that has that animal. They don't need to stay there forever.
~ Mixing breeds of animals is fine if it can occur in nature.
~ No adding tails that shouldn't be there.
~ 1 tail only.
~ The legs can represent abilities like horse legs make better runners, mountain goats are better at climbing, this is in your Felera, but all have amazing jumping abilities!

Horns:
~ Any kind of horns are fine, you don't need to match the animal the legs are from.
~ No 2 kinds of horns, but having a broken horn is fine.
~ Felera have 1-2 horns and no more than that.
~ If horns are to large they can be hazardous to your Felera's safety.
~ All Felera have a faintly coloured tip to their horns (red, orange, yellow).

Fur:
~ Felera's fur colour is always natural in colour.
~ Markings on the legs are fine if it corresponds to the animal.
~ Since Felera can change to look like humans to blend in many can have vibrant non natural hair but only dying temp. patterns in their fur is ok. (cause who would pay for so much hair dye! XD)
~ When winter comes the fur dose grow longer in some areas.
~ All fur/hair becomes snow white in winter as a form of camouflage including dyed fur/hair.

Crown:
~ The crown on the Felera is the winding branches that are permanently attached to their head.
~ Crowns are made of a simple brown branch that wraps around several times.
~ If broken it grows back in seconds.
~ Crowns are rarely seen bare, they are usually covered in leaves/flowers/plants that grow off the branches and reflect the season.
~ Crowns can be changed by thought and often change by mood in young Feleras.
~ Crowns can't not grow food past berries.

Body:
~ Felera's come in all kinds of body types and skin colours.
~ Since many Felera's live amongst humans (can have human jobs and homes) they can get peircings/tattoos.
~ While in the comfort of nature they are usually with no clothes, clothes are usually for rare occasions.

Ears:
~ All Felera have the same ears, same in length, same in fur colour, same in every way.

Gender/Sexuality:
~ Genders are not limited to male and female.
~ Most Felera are commonly pansexual or asexual, but Felera can have any sexuality.
~ Felera do not have genitals based on the animal of their lower half.
~ Felera have human looking genitals that are mostly covered in fur, but average males are 7"
~ Female Felera's getting pregnant impossible.
~ Felera go in heat around mid spring to early summer.

Other facts:
~ They are nature spirits that connect with plants and animals very well.
~ Felera's are born from within a hollow tree but it happens very rarely.
~ When Felera die they turn to plants no matter where they are and are reborn when you place their horns in a hollow tree, the regrowing process can take about 1 month.
~ Nothing from nature can hurt them but man made things can (eg bolder falls on them, they pick it up and move it off. Scrape knee on pavement, injury heals faster than it would for humans but not rapidly).

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Additional info might be added later if I think of it.