Decent tutorial, I’d definitely recommend seaming your geometry and unwrapping it manually (press “U” in edit mode for this menu) to get the best texture results. Additionally, compressing the texture to 256 pixels is what I usually do in Photoshop.
I’d also recommend adding something to explain adding reference images in the newest version of Blender (shift+a then adding reference images).
A separate explanation of rendering in it’s own tutorial for the newest version of blender would be good to help users who are new to blender.
I’ve got some popular tutorials on my YouTube channel which are fairly outdated but you can still get an understanding of some basics Blender functionality: