What to do When You Get it Wrong

Today, I need to fix my sloppy work. The tile setting in the shower was not my best work. Some of the tiles need to be ripped out and reset. Excess thin set and uneven pressure when setting the tiles caused oozing. The thin-set should be below the tile, not between the tiles. Think set is porous and will allow water to penetrate. The space between the tiles should be filled with grout, which is a solid, mechanical, waterproof flooring material. Grout makes up the majority of the floor. I need to fix these tiles and then fill the gaps with grout.