Software-wise: Install free- open source OpenShot, Blender and InkScape
You can create nice titles within OpenShot (it uses Blender and InkScape)
Keep videos to 10-15 minutes for increased watchability
Put explanatory text around the video like the tools you used, the grade of sandpaper etc. with links to your amazon affiliated shop
There are tons of royalty-free music on YT to use in your videos.