I wonder for the images you posted, could you post the price ( or the time you've spent on it + the hourly rate).
The thing is that I need maybe someone to do my art ( which is quite simple) but I have zero idea on the price. But I've been thinking, maybe I can afford it

Plus the other thing, what is the license of the images ? If I hire someone to do images, I'll need to license my images to open source, but I don't know if artists will agree