You really need to plan the layout before you start. The general rule is to start central so that the edges have an even sized cut both sides of the wall. Don't be afraid to shift that if it means they are tiny cuts. Also think about how the tiles are going around the door if doing ceiling to floor).
I discovered these on the last tiling job I did and they made levelling the tiles much easier. Also, staggering (like brickwork) can make it slightly easier because you don't have to make four corners flat at the same point.
You really need to plan the layout before you start. The general rule is to start central so that the edges have an even sized cut both sides of the wall. Don't be afraid to shift that if it means they are tiny cuts. Also think about how the tiles are going around the door if doing ceiling to floor).
I discovered these on the last tiling job I did and they made levelling the tiles much easier. Also, staggering (like brickwork) can make it slightly easier because you don't have to make four corners flat at the same point.
https://www.screwfix.com/p/vitrex-tile-levelling-system-trade-pack-300-piece-set/8419F?kpid=8419F&ds_kid=92700055262507126&ds_rl=1244066&gclid=Cj0KCQjw3f6HBhDHARIsAD_i3D855DJL6bOf7DungLrwqmS3ajSelfPmSt29p52fjdwqxyGifJzC7V4aAnK7EALw_wcB&gclsrc=aw.ds
Get a good manual tile cutter and a 6" angle grinder with tile cutting disc
My last effort: