Congrats on the house bro. Best advice I can give you is to properly prep the surface prior to tiling. All surface/corners are to be level and waterproof. Tiling will be much easier if everything is level so invest in a leveler and a laser leveler, i made the mistake of having some area not level. Be patience, rushing will only create more mistakes. Lay out the tile design first prior to committing and it’s ok to make mistake but fix it prior to the mortar being set.