Hello @siireenh. Nice to meet you. I'm also a freelancer, preparing a portfolio for job currently.
Your work really nice, you will be able to successfully complete the portfolio and apply for job.
Regarding this point, if these pencil drawings are part of your workflow, I think you can try to show your workflow with this drawings, instead of placing it alone. Because these seem like exercises.
From your pencil draft, your craftsmanship is good, and these can all be presented in your final work.
I think the final artwork plus a clear workflow will make the art director know you better.