After you are done and double checked everything (including those front-fan shroud/radiator connector plugs) get yourself cleaned up and go start your car leaving the hood up and the windows down. Keep your hand on the key in case you have to shut off the engine immediately.
If the engine starts up okay and everything sounds and feel normal (no squealing or fierce vibrations) after a minute or two go look under the hood. The fan and belts should be moving okay. My fan seemed wobbly for the first couple of minutes but after it was okay-leaving me thinking it was just my imagination.
The worse that can happen is usually the fan blades either break off spontaneously and/or the fan comes off, thus exploding sending pieces of hard plastic everywhere. This is why you NEVER drop the fan, lay it flat or damage it if during the DIY you plan on using it again. Even if one blade gets chipped or scuffed then the fan can quickly lose equilibrium and wobble itself to bits destroying your engine block and hood.
This is also why it is best to first start the engine with the hood up and everyone clear of the engine bay, and your hand on the key in case you have to cut the engine off pronto. I think the rule of thumb is if your fan doesn’t explode right away you should be good.
That is it! DIY completed! Now it’s time to think about that inevitable WATER PUMP failure prevention upgrade and Thermostat Housing upgrade DIY.