Привет, Никоул!
I'm sure that's not all there is to correct, but I'm a learner myself and just corrected what I am pretty sure about.When you say "I am 14 years old" you use dative case, as if you said "to me are allotted 14 years". Likewise you use dative for the "I like..." expression: you don't say "I like" as much as "to me appeal...". And note that the accusative of feminine words on -а, -я ends in -у or -ю respectively.