Height you are pretty much stuck with. But as already said not the issue that you think it would be I’m 6ft my sisters are 6’2 and 6’3. Never caused them an issue and my equally tall cousin was Polly Pecks Tights model for a while. Several of my female friends are 5’9″ and up, they often wear heels again not a problem.
Broad shoulders can be a problem but, if you sweat a bit and do some exercise a big improvement is possible.It’s all about misdirection and targeting.
Broad shoulders can be reduced by reducing muscle mass at the top of the arm and shoulder. If you develop your pecs more that will draw the eye to your boob area. This is enhanced by targeting muscles to flatten the stomach and narrow your waist.
The last used with exercises to develop the hip and ass will bulk out your hips. With a narrower waist and flatter tummy the waist size reduces, reducing arm and shoulder mass with pec work enlarges the boob area minimizing the broad shoulders. Watch https://www.youtube.com/watch?v=i6HaVYg6kB4&list=LL&index=9&t=6s and https://www.youtube.com/watch?v=K_YDHAxbTmk&list=LL&index=49 to see what can be achieved. It’s stunning.