Hey GoCa.....your voice is excellent for the material you picked. It's likely the same for other types of music but the two songs you chose were well done. It sounds like you may have had some vocal training........as your tempo and control are very good. Try a more professional recording and see how it goes. I think you have what it takes to sing professionally if you want to........with a little more experience.
I agree with Mickster..You sing well...you have a good ear and you're in tune...I did detect nerves ....the way you overcome that is own the song....know it well enough and how you're going to approach it ...rehearse it several times before you press record...It would sound even better with a tad of reverb but your tone and pitch are totally worthy of singing professionally...That's a broad scope term.... from singing at the local pub to a live TV performance at the Grammy's all contingent on being at the right or wrong place at the right or wrong time and dependent on that "luck" you could be performing either place hey maybe both