I am relatively new in this field. (I am struggling to find a cover photo for the page due to copyright issues.)
Two things you need to know then.
Avoid problems to your clients and yourself doing things right from start. Pay for thoose copyrights accordingly.
Do not try to "solve" your clients needs using only free resources. Charge your client if your client needs a payed resource.
Find your images
You can google two things:
- Stock photos and compare prices, Normally the higher the price the more "exclusive" the content. It is either a new photo, or somehow has more "quality". Older and more worn out content is cheaper.
Keep track of what client buys what images. If you use the same image with diferent clients you need to pay them again. Keep a well organized track of your mail receipts.
- Free stock photos There are a few trully free images, and there are several more that need a clear atributtion. Explore them and respect the terms if you need to use them.
The best option
a company that provides grooming services (for females, like makeup artists, hairdressers etc)
There is a golden oportunity to make something exclusive! Prepare a profesional photoshoot!
And hire a professional photographer please, and a beautiful model.