Line drawing over Portraits & Hands

[Digbydo 2]

I've found some images (attached) on Pinterest but so far I have been unable to discover how the author's have created this style.  I assume it was done in photoshop but I'm pretty certain it can be done in Affinity Photo or Designer or a mixture of both and although they have used white line trails I would have like to introduce some other colours too.  So, the obvious questions are…can this be done in Affinity Photo & are there any tutorials that can help or assist me (even if its in photoshop I'll try and have a bash at it).

Any help, hints tips or suggestions would be much appreciated ~ and as always ~ Thinks in advance.😉

[GarryP]

My first guess is that these were done using artistic skills alone, or maybe some machine learning what-not.

Someone should be able to suggest a brush (or more than one) – it looks a bit like chalk to me – that will be helpful in recreating this sort of thing but I think it might 'simply' require skill, practice and patience.

[henryanthony]

My guess is these were done by hand, no pun intended, using a pressure sensitive pen device. But, you never know these days, a clever programmer may have coded it somehow. The second one may have been done with traditional media such as pencil, pen ink, etc.