If you are lightskinned, and want to get tanner, than I suggest tanning in the sun for at least 2 hours a day. Tanning beds are harmful to the body, so I would never suggest that,
Your hair sounds literally perfect, and if you dye it that can damage your hair, and cause breakage, so if you were looking to do that, I wouldn't suggest that either. But then again these are just my opinions.
If you don't like your eye color you can get contacts they aren't necessarily only for those that wear glasses, because I have a lot of friends that wear contacts, but don't wear glasses.
Well, obviously, you can not just get taller, or like actually fix that, but vertical stripes really help to make someone appear taller.
If you want to clear your face I suggest checking out Awesomenesstv on Youtube they have a recent video how to clear and make your skin softer. Also, wash your face at least two times a day, preferably at night, and during the day.
To get fit, I would say just go to your local park, or if you have a treadmill, slowly work your way up, maybe walk a mile one day, then run the next, and slowly increase the miles you walk or run, and then eventually make it all running, so that you get use to it, after a while it starts to feel good, and it's normal. You can also follow some ig accounts on fitness which will give you great fitness workout techniques to tone each part of your body.
Lastly, I would say it's really hard to just switch up your diet. It just mainly depends on how often you eat each type of food, so that you can switch it up. I would say the same like exercising. Eat less and less of the main categories that are bad for you, and then you it will be a lot easier. I know a lot of people that just jump to diets like these, and they usually don't last long. They may last for 2 months at the most, and that really cant help to change anything