Sick portfolio. I think if it lands in the right hands, you'll have a high chance at getting a job. The only thing which stood out to me is the heart in your last project looks like an inflatable rubber heart.
I agree with Ashervisalis that the quality is there. Very good execution of a cohesive hand painted style. The only thing I might suggest is adding a more complete environment to your portfolio. Doesn't have to be huge, but something a bit bigger than a diorama to demonstrate application of your hand painted style in the context of larger structures and what not.
Thank you for your in-depth critique with image examples. It's much appreciated.
I totally agree with you and actually started working on a revised version of the heart altar piece since I think the concept has a lot of potential. When I look back at that portfolio piece I almost find it funny how poorly executed it is. But that also gives me a lot of comfort since it proves improvement.