Does anyone recognize the style? Help me find the artist?

Hi!

About 7-10 years ago, I went to a comic con here in Houston (comicpalooza, I think) and bought two 5×7 poster cards. This Mario Bros one and a Mickey/ Minnie royal dress up one (which is still packed away from my recent move). I love this style, but forgot to grab the artists name or see it they had a page l could follow them on. There are some initials on the bottom left corner of the drawing, but I can't make them out.

I just came back from the NostalgiaCon Houston and was hoping to find them there, but didn't find anything that resembled these. Does anyone recognize the work and could direct me to a page to follow? I would love to buy more and follow the artists work.

Thank you!