How hard is it to do a motor replacement on a 1zzfe 04?

Never done something as complicated as that and my only option is to buy, and do it myself. Recommendations, tips, guidance needed so I don’t destroy my celi twice in a row.. I have lots of forums and videos saved on it but genuinely, is there anyone else who had to do it themselves for the first time and did it successfully? Any issues you came across? All advice welcome please