Short sentence

[JBML]

Hello everybody!
I would like to write a sentence in Japanese that would more or less be the translation of the following:
"If you consider your current level as poor, then if you sing after becoming good, even animals will gather to listen to you."
This is half ironic, and it is the answer to someone who said he was bad at singing.
My proposition is:
「今のレベルは下手と呼ばれたら、うまく歌ったら動物 も集まってきますよ」,
however I feel it sounds very unnatural and I'm not even sure the reader will understand it's half a joke.
Any comment or suggestion will be very much appreciated!
Thank you very much,
JBML

 

[Toritoribe]

I would say 今のレベルが下手だっていうなら、上手く歌えたときには動物だって聴きに来ますよ。

 

[masaegu]

「今のレベルは下手と呼ばれたら、うまく歌ったら動物も集まってきますよ」,

が＞は in if-clauses.