Ideally I could go one of two ways if controlling the details was an option.
5'10" Fabulous
and proportioned like so

or 6'1" Formitable
and built like the boxer, 3rd in from the left

I'd keep my natural hair colour, as it's an awesome mix of copper-red, red-brown, with natural light strawberry blonde/blonde highlights, and it's naturally a long curl / tight wave. In my younger days (pfft listen to me I'm only in my early 30s lol) I'd have ciswomen comment "Your hair is way too pretty for a boy."
Eye colour i'd love either piercing blue or a more green version of my natural eye colour (they're a grey-blue w/ a green tinge)
half to 75% less of the ammount of freckles would be awesome so that makeup would be easier
And I'd want narrower feet! I have broad feet like a goram Hobbit

I have to order EE+ widths just so my feet don''t feel squished.
Though on the not picky side of things, genetically female version of me, with a high C or real low D for proportion sake (I'm blessed/cursed with a stout frame from my dad's side)