A painting of my mother as a mermaid with my son and my daughter (her grandchildren)

Would like a painting done of a mermaid grandmother holding her mermaid grandson and mermaid granddaughter. They should resemble my mother with fair skin blue eyes and long wavy white hair, my son who is 5 years old long and skinny brown very curtly hair dark brown eyes and my daughter who is two and slightly chubby (compared to her brother) soft whispy dark brown curly/wavey hair and dark brown eyes. I can supply a picture of each if them. They do not need to look EXACTLY as they are, just a good resemblance in features and color an body type. Proud like to discuss the scene that would be painted. Either in the water or on the beach maybe on a rock on the shore, something like that I do want them all to look beautiful like with seashell and pearls as jewelry and in their hair. Beautiful colors