This art is very well done in terms of anatomy and getting the proportions right. I like how the shading is in various tones to indicate color differences. However the shading is a touch too smudged making the lines blurred and unclear. It's a good idea to keep the drawing as clean and crisp as possible so all the details can be seen better. As for originality this piece is good since you have your own style to this popular pose of Trunks.
Overall, it is a good piece with vivid shades that caught my eye while scrolling through arts. Awesome work!