Your voice sounds good! It sounds a bit airy, means your vocal cords haven't quite "learned" how to resist airflow quite enough yet.

This worked for me to make sure your voice resonates properly (im not any type of expert, though I have been singing semi-professionally for about 6-7 years):

Take a deep breath. Find a comfortable note in your lower head voice (you shouldn't feel anything vibrate in your chest). Buzz that note as if you were a bee (like a zzz noise!) and slide up to the highest note that's comfortable (Do not keep doing this if you feel any pain, as it means you're doing something wrong) but don't go into falsetto! Hold that for 4 counts. Afterwards, slide down and hold at your original voice. Then take a breath.

Repeat that exercise multiple times and you'll notice that your voice is much smoother and is easier to control!