I think I accidentally lied in my personal statement

So I play the piano and am in the process of doing grade 8, I mentioned 'playing grade 8 piano' on my personal statement, meaning that I play at grade 8 level (like I'm playing grade 8 pieces), and I didn't really think much of it until my friend read it (after I submitted) and said 'oh I didn't know you already did grade 8!' Is this a problem? idk what to do