Hello,
Firstly, please let me introduce myself, my name is Hari and I am a concept artist/illustrator who have over 10 years of experience in 2D art field.
I have downloaded the images you attached in the project. To tell you the truth, Manga/semi - realistic art is my strong point, so I am confident that I can provide you with an awesome portrait of your character if I have an opportunity to work with you on this project.
Please take a look at my portfolio, you will see so many character concept artwork that I have finished for my previous project.
https://www.freelancer.com/u/zuart
I can start to work RIGHT NOW and the portrait will be finished within the next two days if you hire me.
Thank you for reading my proposal. I am looking forward to an opportunity to work with you,
Hari