That soldering job was brutal. Those look like 0603 resistors which are huge in the world of electronics. You really don't need a microscope for something that large, but if you're inexperienced and need one, that's fine, but don't solder with a video microscope, the latency and resolution will kill you. Get a real glass microscope. This is an easy job complicated by using the wrong tools. The tip on the hot air gun was way too big, and he didn't Kapton tape around the resistor to prevent damage. Even worse is that he made all these mistakes with a hot air gun when he didn't need to use one at all. Just 2 soldering irons, hold one on to each side of the resistor and it will pop off real quick. I can't believe he just yanked on it and was surprised the pads got ripped. Also, please get better soldering tips. You have a great digital Hakko iron and tips are super easy to get, but they are using the stock tip which is way too big for Surface Mount work, basically only good for Through Hole.
I get that Alex is clearly not an electronics engineer, he's mechanical, but this stuff can be found with a little research. Or just hire an electronics engineer.