Song 'Quite Alright'

Hello!
First, I'd like to thank you for the work and effort you put into your videos and I have to say, your classes have helped me a lot. After finishing your music theory course and this mixing course, I have written, recorded and mixed my first "serious" project. I'm attaching a link to said project - my song (it is not mastered), and I hope you can take a listen. I'd love to hear your thoughts, criticisms and I would appreciate any tips you could give me on how to make it sound more professional.
Thank you!