A friend approached me for a tattoo design and sent me the following image as a stylistic reference.

Then she shared this image of her and her mother that she wanted to turn into a tattoo with the same line art style.

Here are the results! In Version 1, I stick to what's pictured in the reference image, and in Version 2, I add some lines that aren't present in Version 1 to better fill out the scene.

Though she didn't end up getting the tattoo, my friend loved the designs! The following are the designs over the image of a forearm to better visualize how it could look on one's arm.