why do I sound terrible when I record my singing with a mic?

IM GOING TO CRY.
I’ve never sang for anyone before but always told them I sing great. My mom is putting me in private voice lessons and choir. The choir expects me to be a super good singer because they all aren’t good singers.

I just recorded myself singing a couple easy songs like The Prayer and I STINK. I ABSOLUTELY STINK. I can reach high notes but they don’t sound good. it sounds like I can’t hold a note. If I sing for people, they’ll think I’m a liar!!! I read around that its my real voice. THAT ABSOLUTELY CAN NOT BE MY REAL VOICE.

My brothers, all three, the only people I’ve ever sang for, say I have an amazing voice – like I sing like Jackie Evancho, and they rated me NINE OUT OF TEN.

I used a 2005 iMac mic. Is it the mic!? please help me… i’m absolutely devastated.

Who will win America’s Got Talent? ..your vote?

This is the first year watching this show and i love it!
Based on the semifinals..my top 5 are

1) Fighting Gravity
2)Prince Poppycock
3)Jackie Evancho(Even though shes GREAT, i kind of find it boring..maybe cause im a teenager)
4)Michael Grimm
5)Taylor Mathews( Yes, he is not the greatest singer there but he’s gooood)

..omg thats like 4 singers^ whoa..what about you..i really love fighting gravityy!

Who do you want to win America’s Got Talent?

Here are the contestants that are still in it:

*Anna & Patryk – dancing
*Christina & Ali – singing
*Michael Grimm – singing
*Taylor Mathews – singing
*Prince Poppycock – singing
Alice Tan Ridley – singing
Debra Romer – singing
Fighting Gravity – Illusion dancing
Haspop – dancing
Jackie Evancho – singing
Jeremy VanSchoonhoven – stunt bicycle
Maestro Alexander Bui – playing piano
Michael Grasso – singing
Murray – magician
Nathaniel Kenyon – singing
Michael Lipari & Ashleigh Dejon – arial dancing
Studio One Young Beat Society – dancing

* Denotes finalist of last week. Of the remaining twelve, five will also be finalists, judged by their performances on Tuesday night.

Please tell me WHY to get chosen as the best answer.
!!!! I put Michael Grasso down as a singer, but he is a magician. So sorry!!!