I do sometimes.

However, if someone has gifted me with something, or I've used a freebie that I think makes the image pop, I will always send a PM letting them know that I created an image using their product.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi