I don't make these sorts of videos for money but I'll say that there are probably better cameras you could consider using. For "fiddly" stuff I use my DSLR with an appropriate lens and set it on a tripod, pointing down at whatever I'm working on and manually focus before recording.
So many times I watch Youtube demos/reviews/tutorials where people have to hold their hand up behind some small object to "trick" their autofocusing phone camera or webcam to focus at the correct distance. Using a better camera (doesn't even need to be a DSLR, just something with a semblance of control over focus and aperture) makes a huge difference in getting good footage, especially when dealing with macro-type photography or videography.
Even if you have a passable point-and-shoot camera with video capability laying around, it would be an improvement over a phone camera. Those are great for general photography and video clips and it's amazing how good they have gotten but they often lack control.
The other main thing is audio. Using a laptop's built-in mic or a phone/camera mic will never sound as good as a decent dedicated mic with the right pickup pattern. Put simply, those built-in mics are meant to pick up everything all around them, including laptop fan noise, HVAC, cars on the street, etc. Sure, you can clean it up somewhat in post-production with noise reduction software but that also takes time and removes some of the vocal range, leading to audio that can sound tinny, warbly, or with noticeable artifacts depending on how much noise you need to remove. Using even an affordable USB mic with a cardioid pickup pattern (picks up sound right around the front of the mic but not behind it or way out away from it) will ensure you pick up your voice and not much ambient noise. All this means less time spent cleaning up audio and better sounding narration.
It may be easiest to shoot the video (remember good lighting), perhaps do rough audio narration for reference and to help with your timing, and then once you've edited all of the video clips together in your editing software, record a voice-over with your good mic. You can re-do as many times as you need and it's easier to do a retake of an audio segment without it being noticeable in the finished project than it is to do the same with video while avoiding jump cuts and overuse of transitions.
So many times I watch Youtube demos/reviews/tutorials where people have to hold their hand up behind some small object to "trick" their autofocusing phone camera or webcam to focus at the correct distance. Using a better camera (doesn't even need to be a DSLR, just something with a semblance of control over focus and aperture) makes a huge difference in getting good footage, especially when dealing with macro-type photography or videography.
Even if you have a passable point-and-shoot camera with video capability laying around, it would be an improvement over a phone camera. Those are great for general photography and video clips and it's amazing how good they have gotten but they often lack control.
The other main thing is audio. Using a laptop's built-in mic or a phone/camera mic will never sound as good as a decent dedicated mic with the right pickup pattern. Put simply, those built-in mics are meant to pick up everything all around them, including laptop fan noise, HVAC, cars on the street, etc. Sure, you can clean it up somewhat in post-production with noise reduction software but that also takes time and removes some of the vocal range, leading to audio that can sound tinny, warbly, or with noticeable artifacts depending on how much noise you need to remove. Using even an affordable USB mic with a cardioid pickup pattern (picks up sound right around the front of the mic but not behind it or way out away from it) will ensure you pick up your voice and not much ambient noise. All this means less time spent cleaning up audio and better sounding narration.
It may be easiest to shoot the video (remember good lighting), perhaps do rough audio narration for reference and to help with your timing, and then once you've edited all of the video clips together in your editing software, record a voice-over with your good mic. You can re-do as many times as you need and it's easier to do a retake of an audio segment without it being noticeable in the finished project than it is to do the same with video while avoiding jump cuts and overuse of transitions.