Sent additional info to CMU last night

I have applied to CMU and yesterday I was drafting the things I’ve achieved for the past month. Most unis are okay with sending the material, I sent it to CMU, and I had just written I hope you consider it in the Admissions process, and it will also give you a better picture of who I am. Mainly I had written that to send it to a Uni that waitlisted me, but my counsellor dint remove it from the one we sent to CMU, they just replied thanks for sending, short story: we don’t use it for the admissions process.
I did not know that, will it hurt my chances?! Will it look bad that I sent that to them, and wrote that as well?