Don't feel pressured to do something big for your 16th, besides, there's not really much you can do. Personally I did literally nothing for my 16th apart from have dominos pizza. It's also likely that if you do something big for your 16th your parents wont let you have a big 18th (or wont give you much money for it anyway) so it's best to wait until then. Plus you'll actually be able to go out drinking if that's what you're into.