I just want to confirm if I have done everything correctly up to now in my bathroom reno. I removed all the old drywall around my old tub and replaced with 1/2" hardibacker, taped all joints and never had 4 corners meet. Plumber installed new tub then I tiled around according to tub specs and the grouted and sealed grout plus caulked all corners, around the tub and the ceiling. I have since ripped up 3/8" ply from floor replace with 1/4" hardibacker which was attached with thinset and screwed down, I then added a 3x5ft Nuheat flooring mat applied with same thinset. I am currently drywalling repairing after the initial demo and then I intend to prime the room, and then paint it. Tile the floor fully, I am hoping that its level enough after heating mat. Add toilet and vanity and fixtures.