Merge 2 photos or more in specific style

I am looking for a graphic designer who will prepare 3 graphics for me in a similar style to the attached pictures. You should combine at least two photos together. The photos should be carefully selected, in the style of those I have attached.

Initially, I order three graphics, if they are prepared properly, I will be interested in permanent cooperation.

Details:
Graphic 1 - combine two photos of your choice (two people). I would like it to be an older woman holding a baby in the style of the attached pictures.

Graphic 2 - combine two photos of your choice (two people) in the style as in the attached pictures Grandfather and granddaughter.

Graphic 3 - combine 3 photos to show a family portrait between generations in the style of the attached pictures (parents, grandparents, grandchildren)


Additional information
- You have to find and select the photos yourself so that they are nice and more or less match the ones I have attached
- Photos must be pasted realistically and properly adjusted to match each other (well-selected shadows, etc.)
- Photos must be black and white with a background such as in the attached pictures
- I will need the raw photos that were used in the project
- Size 30x40cm

Additionally, I would like to ask for information about the cost of processing one photo