Your Strength or Dexterity score increases by 1. Your Constitution score increases by 1.

Your burning soul allows you to cast the following spells at will

Cantrip: firebolt, control flames, create bonfire 

Lvl 2: flame blade

Lvl 3:fire ball, flame arrows

Lvl 4: fire shield 

You are considered  undead

You have advantage against being charmed and frightened.

 Your bones are well-preserved, and magic has strengthened them. When you aren't wearing armor, your AC is 11 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lo

Not counting their previous lives, skeletons can be nearly any age. Skeletons don't age, and won't die of old age until the magic keeping them alive collapses.

Skeletons are usually neutral, though evil or chaotic skeletons are common

You are however tall you were in life and weigh significantly less. Your size is Medium

Your base walking speed is 30 feet

Thanks to the fact that you have no eyes, magic was necessary to give you sight. In addition to being able to see in normal light, you can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can discern color in darkness.

You can restore any limb after it being detached or destroyed by simply finding a suitable replacement, then using your action to attach it.

You are immune to disease, being poisoned and poison damage. You do not need to eat or breathe. Instead of sleeping, you enter an inactive state for 4 hours each day. You do not dream in this state; you are fully aware of your surroundings and notice approaching enemies and other events as normal.

 You appear to be a beautiful woman to anyone who fails their perception check to those who sucessed you appear to be a combination of your true form and false appearance, your true form is revealed to anyone with truesight automatically 

Common and two others

thanks to the fire burning in your chest that sustains your life force you can consume any non-magical flames to heal yourself 

Amounts you heal at each lvl

Lvl 5 1d6

Lvl 10 2d6

Lvl 15 3d6

Lvl 20 4d6