I can't believe I haven't posted here yet, that shall change! I really enjoy your coloring, it's smooth and in a way gives your art a cartoonish vibe. The Milotic card mostly catches my eye for the coloring (I haven't played Persona 4, yet but I want to; I've watched a few episodes of it and played Persona 4 Arena) and maybe as a suggestion (take it or leave it), have the background lines more arranged as an "x-like" formation and I would probably replace some of the lines with a solid background (you can use yellow to keep the Persona vibe). To me, the extra background lines look rather busy to me and if you toned that down a bit, I think it might look a bit better. Also just a minor nitpick, I see some white spots out of the lines on Milotic's right hair in the black background (sorry I can't explain the location well). Other than that, keep up the great work!