Preparing a simple setup. Just tape things down and fix the PCB
Precisely position the stencil and tape it down in place
Add some solder paste, Mechanik seems to be the brand of choice
Use a some kinda rakel and smear it onto the pads
Check how nicely the paste was applied. if bad, just clean it and try again
Now start placing the parts with a fine tweezer
Don't worry too much if they are not perfeclty positioned... it will work miraculously!
Put it on the hotplate and start heating
Watch the process self-aligning and soldering all the parts
There you go, DONE!