The first one is a mini portrait loosely based on my mother. I gave myself roughly a week on this. i'm trying to get back into the habit of finishing work instead of it being forever lost to the dreaded wip folder.
Also I find that smaller studies like this are good to test out new texturexyz multichannelmap workflow.
The other two was made over a period of two days. Started with an existing basemesh for both. Shout out to @Daniel Bauer for his tutorial on texturexyz