1993 Lincoln Continental won't start

Check for what is missing
do you have spark
do you have fuel and fuel pressure
check injector pulse?
Recheck your work for disconnected wire or connector

Find an injector
unplug it, use a test light check for power with key on should have power on one of the wires
use a noid light in the plug instead of the injector
crank engine if have pulse light should blink as engine cranking