My modded switch lite with new shell and joycons! Got these from aliexpress since the original shell was cracked and the joycons had some dead zones. Whole process took about 3.5 hours (with child interruptions). I had some pics of the soldering but seem to have lost them.
Definitely takes practice. I’ve done a little microsoldering before but I also practiced moving components around on an old motherboard beforehand. Unless you have absolutely fantastic eyes a microscope is required.