Creation of a set of illustration assets adapted from photos

I would like a set of digital illustrations created from photos for a charity.

I have attached existing assets as examples of the required style. You can see more examples on the charity website: musicastherapy.org

I will provide six photos for adapting into six illustrations. I would like the final illustrations to be made available in high res png or similar in a range of specified colours.

Please ignore the budget and provide the following:
- a quote for creation of this set of assets
- timeframe for completion
- examples of your previous work
- x2 testimonials

Happy for you to direct me to a website where I can see your portfolio etc.

Thanks!