i strongly believe anyone can pull off pastel hair! i’d suggest you buy a wig the color of your choice to start off, that way you can see if you like it or not :)
it looks to me like you could pull off any pastel color, hunn! i would suggest a gorgeous lilac :)
no it wont look bad, it will look fabulous! i cant really tell you much about how damaged it will get because it does require an ample amount of bleaching. i’d say you’ll be better off getting it done at a salon, seeing as they know exactly what to do/use to lessen the damage of your locks. i would also recommend to anyone with colored/bleached hair to try bumble & bumble shampoo. it works miracles on your hair!