When I first saw this, what struck me most was the originality of the drawing. I'd never seen anyone make a collection of Disney characters with surfing as a theme. The whole series of surfing disney characters is great and strung together well. The color scheme of this drawing is amazing; everything is so vivid and bright. The splashes of water, the texture of the palm trees, the highlights of morph, are all incredible.
One thing that I would recommend improvement on is the movement of the water; most of it is very impressive in its realistic motions but there are some parts of it that don't fit. For example, in the upper right hand side of the drawing the waves rise up towards the sky but some of the lines cut off abruptly and new lines are created to continue the curve. Another example would be near the middle of the drawing where the wave starts to fade from view; the texture suddenly changes into a more cartoon version of water. Here's a tutorial if you need any extra tips on the waves: [link]
The shading is very good, shadows appearing where they should. I particularly enjoy the way the color fades with the sunlight in the background. The only thing I'd suggest for this aspect is to make more shadows against Jim's stomach to give more texture.
His expression is fantastic; most people have trouble creating emotion when drawing cartoon figures but this artist is definitely an exception. He looks very determined and mischievous and even Morph is expressive, his admiration and glee showing.
The border for this piece of art is well made, the wood design very realistic. The white on the outer rim of the drawing is also a nice touch. It's not a necessity but it makes the theme even lighter than it already is.
The one thing I can't quite decide my opinion on is the color of the words 'Disney Surfers'. On one hand, it's great that they match the tone of the rest of the drawing with it's light colors and fluid writing. On the other hand, the blue and the texture of the word 'Surfers' blends in a little too much with the ocean's waves. The outlines of the words definitely attempt to avoid this problem but I'm not sure it quite works for the lower half of the 'S' since the waves there are darker and therefore make the outline less pronounced. I'd suggest either changing the colors of the words or making the blue of the waves lighter so the outline has a greater contrast.
All in all, this is a beautiful piece that only has minor errors. Despite these details, this artwork is incredible and is definitely one of my favorite drawings based on 'Treasure Planet.'