Help me finish a bathroom design

I am doing a lot of my own design work for our house (a 150 yr old Philadelphia row home in center city Philadelphia, likely last renovated in the 1980s). For the current guest bathroom we are working on, I have mostly completed the design of a moody yet classic bathroom of black and white penny tile, with black paint and satin nickel finish, but would love partnership for finishing details (mirror size and shape, sconces, hardware). I hope the partnership goes well as I have two other bathrooms (the kids bathroom and master bath) and 2 bedrooms (guest room and master) to do. For those, I have a vision but have not started the detailed design plan or procurement, but to start with, I am looking for help with this. I would love to hear if this is in scope for you and your pricing scheme.