Hi friends! We're making good progress on a diy bathroom remodel, but have hit a snag. Our bathroom was last remodeled in the sixties, with wallpaper and a half wall of wood paneling. We decided to keep the paneling, paint it white and re-wallpaper. We tore out the old vanity, installed an Ikea double sink, new mirrors, tile backsplash, all good so far. Here's the snag: the old vanity extended all the way to the corner, but our new vanity is a few inches short. No worries, we bought extra trim and paneling to bridge the gap at the window. So we merrily installed the tile backsplash and quickly realized that the existing paneling on the left side is higher than on the right side. We installed the tile to match the higher level trim on the left. We can't raise the right side because the bottom of the window frame restricts the height. Any ideas? Should we lower the left side of the trim and paneling to match the right? What to do with the awkward gap between the tiles and trim? Excuse the messy bathroom pics!

Right side about 3/4 inch

Left side. Will be caulked and painted. Appreciate any ideas!