Try to relax your voice a little. Sounds a little whiny. If the song is to high for you, lower the key. Good luck!.

This is my covers from my YouTube Channel

My Covers

Little Talks (Studio Version)

Cover de Na Sua Cara da Anitta e Pablo Vittar, acústico

My Version of Monogatari by Eden Kai - from Terrace House

Cover da Música Transformador da Mariana Nolasco

Acoustic Cover of BTS - Life Goes On in english

I have an YouTube Channel and I post some covers here! 
Please check and subscribe, thanks!
Links down below