I really like the Line Art of the Mermaid i wish the stone & the water or place she is on was outlined as well to make it more out there (so that it doesn't look like the Sly and Water are connected as much) other than that... I really love this💙
I like the style you went with. Keep practicing on your hands, they are always a pain and the fins around her waist and on her tail could use a little more detail. Other than that, good linework and body proportions. Keep at it.