Question about silohuettes / rasterized images
I've seen ALOT alot of prints with all sorts of animals (foxes, cats, elephants, etc) and silhouettes like buildings, forests, children, etc.
So what's up - I'd like to think most submitted or printed designs that include a forest silhouette or one of an elephant or something, the artist did not take the picture.
If I google and find a nice image of a forest I like, and turn it into a 1 color, modified vector - can I use this? Or must it be royalty free?
I feel like this is a really unspoken territory, I do my best to only use my pictures to modify, but i have also made vectors or traces of images I like, and implement my own style...
Do the really good guys (Dina / Budi / Dandin / etc) draw up every silohuette of forests or child from scratch, or is tracing or aking a silohuette from elsewhere allowed?
Any and all input, criticism and whatever welcome.