Hi @Alexandre Morais I think your assessment is spot on, which is a really good sign that you're aware of what's going on in your work! Luckily through photoshop, its pretty easy to just add a multiply layer on top of your drawing and lay in those darker shadows. I think you're also going to have to lighten that foreground just a tad bit so that your shadows can read more clearly. Additionally, you want to think about just some light indication of material rendering so that you can differentiate between the objects in your image. Right now, the goblin skin, wooden shield, metal helmet, chain, and fabric all seem like they were rendered very similarly. You'll want to keep in mind the reflectivity of these materials, and how that presents itself in your rendering. The value of metal for example is highly dependent on the light sources around it. Since the scene is mostly very dark, the local value of the metal should be very dark as well. You'd get pops of light in the metal from the light coming off screen, and that light should be way brighter than the light that hits the skin. There's definitely a lot of things that need to be juggled when you take on a more finished character illustration like this, and I think you did a pretty good job! Let me know if there is anything about my critique that I can clear up for you

Good Alexandre

Cool little goblin guy. Push those values! If you are having trouble with saturation and contrast, try starting with all flat colors and make sure those are at the saturation you want. Then you can add in hard cast shadows with a blue or purple (or whatever color you want, just not gray) on a multiply layer. This gives you a nice base to start painting on top of.

You captured that old school feeling, I like it! His weight is centered a little too far behind his feet, so he doesn't quite look balanced. And I'm not sure how he's wearing those bracelets, looks like they might fall off, if he lowered his arm down, and his helmet may be cutting into his ears. If these are intentional, it's fine but otherwise, it's a good idea to think about function when sketching. Also the shield could use a bit of thickness, it looks paper thin. Values look maybe a little low contrast, but I think that adds to the old school look. Otherwise, the style looks consistent. If you wanted to make shadows darker, lights lighter, you could certainly do that. Depends on what sort of feel you want. You can always try on a new layer and see how you like it, or just try it on your next piece. Keep on sketching!

Main thing I see is the positioning of the sword is really weird. Should be more upright if he's just standing there. The other thing is that the legs are in the same position, which makes it less interesting. The shield looks brand new, when it could be an opportunity for storytelling: battle scars, chips, pieces missing, etc.