@menalkhan hi I'm just gonna keep it brief. I think you have a good style going and I would definitely recommend making submissions. I always recommend submitting even if you're not ready so that you'll get over the fear of rejection because that fear is very strong and paralyzing. A lot of illustrators give up before they even get started because of that fear. And boy, will you inevitably experience a lot of rejection during this process. that's just a given.
what I think you need to work on most is adding sequential illustrations. if you want to illustrate books or narrative works, you need to show that you can illustrate the same character consistently over various illustrations.
overall, this is my 2 cents. all the best. keep us posted.