Heya, the name's Parker. Im an earthbound style artist and im willing to help your project. Here is my portfolio,
https://fanifacation.carbonmade.com my gmail is in the portfolio.
Im also going to give you some advice as well. Just so that later your not hurt by it I'll tell you, frankly put, 50-80% of the stuff in the concept images will probably be needing a huge overhaul on appearance and style. When it comes to a disign of something the entire game needs to keep the same looks.
For an example from undertale all battles have a very odd and simple style with bouncy movements. An example from earthbound is how all characters on the overworld have a similar apearence with the contrast with mosters only there to signify the level of difference there is.
Sorry, i bet that this sounds like a huge rant. Anyway, the basic point im coming to is if im gonna work with you i want it to be clear on styles as, in my own artistic opinion, its one of the most important parts to communicate.
Send me a message and we can discuss what you'd like me to do for you specifically.
Thank you and have a great day
-Parker.