Your flutterpony character has several abilities that come as part of being one of the flutterponies.
Ability Score Increase: Your Dexterity score increases by 2. Your Charisma increases by 1.
Age: Flutterponies mature around ten years of age and their oldest are around eighty years of age.
Alignment: Favoring form over function, flutterpony societies tend to be vain places of relative chaos compared to other races.
Size: Your size is Medium.
Speed: Your base walking speed is 25 feet.
Four-Legged: Being a four legged creature, you can bear greater weights (50%) than a human of the same Strength without being encumbered. Any roll to avoid becoming prone is made with advantage.
Languages: You can speak, read, and write Common and Sylvan. Sylvan is a musical language of fey creatures, and their sing song can find its way into other languages.
Fingerless: Flutterponies may use their mouth as one hand and are considered small sized for sake of what they can wield or not.
Small Origins: Once per long rest, you may shrink yourself as a bonus action, becoming much smaller. While shrunk, any attack against your AC by a creature of Medium size or larger has disadvantage and you have advantage on Dexterity saving throws. Any physical weapon you use has its damage reduced by 1d6 (minimum 1 damage). This persists for one minute.
Wings: Your base flying speed is 30 feet. You cannot fly if you are wearing armor you are not proficient in, armor not tailored to accommodate your wings, or a backpack not specially tailored to your wings. While flying, you are vulnerable to piercing damage, and you have disadvantage on Strength checks to interact with objects that are on the ground.