Timing belt is off, I think?

I changed the spark plugs, the coil, the crankshaft sensor, the camshaft sensor, and the spark plug wires. I put the firing as 1234 and one on coil 1324 or are they 1342 so it finally started I drove one mile and I heard a noise then it started to slow down and turned off. Well, I opened where the timing belt is and I found that somehow one of my helpers forgot to tell me they dropped a screw and I found it by one of the teeth of the belt. So, I got it and put the cover back on well I try it and it drains my battery, but it shoots you know where you put starter fluid to help it start and it (i call it farts out). Well, every time I try to start it, it farts, but no start. I have court tomorrow and I have been under and over this car I don't know what to do. One other thing I'm a female so please go easy on me. Thank you please help me!