here's a draft of large transparent windows. in the editor it's a little tricky to see which wall texture each window is a match for, but most of them are there. these are designed to be used with parallaxes to show outdoor scenery through the windows. might be good for mansions, libraries, museums, cathedrals, etc. this is free for commercial and non-commercial use, provided you own RPG Maker MV. please credit Starbird.
then after is a basic template for making tile art for MV.