>>55683735
>unique
The only way to get a truly unique race is going to be to effectively write out an encyclopedia article for your new OC species and, if you can vaguely art, draw them. It will be cool and suited to your campaign and table, but whether it has a larger audience is going to depend on a combination of factors, including whether or not the creator even shares it beyond the confines of their group.
If you want to develop fantasy races, I highly suggest reading through the Wikipedia page on Humans and taking detailed notes. Figure out where a race could diverge, why they would, and what other effects such a divergence might have. Even if you're going for a "beast" race, start from human because that will ensure that you're focusing on the actual aspects of the sapient creature.
Pay careful attention to the parts on the brain, psychology, and thought. The temporal lobes and prefrontal cortex have increased in size disproportionately over the course of human development, so understand what those areas relate to and then explore your options for the encephalization of other species. The parietal lobes, for instance, could be disproportionately enlarged in a fantasy race, giving them a greater emphasis on the integration of sensory information and object manipulation.
Remember that your goal with a race should always be for its members to showcase as wide a range of personalities and idiosyncrasies as humans do. And, yes, that means that some individuals will be highly atypical--just as is the case among humans. But that should not be presented as a binary thing, but as a continuum. And, yes, sometimes that will mean that the exact same character could be played as a member of multiple species without changing dramatically. It's just that, in each case, the character would be at a different distance from and angle to the race's "average."