Totally agree with @IndigoShirtProd !
I am possibly one of the less skilled/talented artist's on this site, but if there is one thing I know how to do it is to bring energy and emotion. What I recommend is maybe making a character reference sheet. I love working with colors, its amazing how colors can make such a difference. Different expressions are good too! Anatomy will always be an issue when learning, hence why my drawings lack proper anatomy.
I would recommend bringing in some color or going for some more dynamic poses/expressions!
Ex of character ref:
I could have gone b&w, but I think bright dynamic colors brings forth a lot of energy. If you do that, and bring energy, come up with some backstories or likes/dislikes, you can find that creation gets easier.