My First Illustration- self obsessed me

This is my first time doing an illustration and actually using adobe illustrator. Had fun learnt a lot thank to online content and fellow graphic designers who put the content online so that a dummy like me can learn something. Open to suggestion let me know what can i improve in this design and what i do to improve my future illustrations. I started learning about how to create illustrations because as a ux designer i always wanted to create my own illustrations that can match my content.