You have the silhouettes of the textures, which is one component- the other is the breakup pattern as we move from shadow to light. All your transitions are smooth, which makes all your textures look the same. Think about the moon: not a ton of textural information in the lights or shadows, but a lot of information as we transition from light to shadow. Jon Hardesty does a good job explaining textures- he has a whole series on Schoolism and maybe on Youtube as well. DND artists to study would be Jesper Esjing and Tyler Jacobson. Put their art next to yours and spend some time really thinking about what separates their art from yours

Just to add on top of some 'homework' that everyone else has discussed xD, I think Dorian Iten is one of the best when it comes to breaking down light on form. He has some free material on YouTube, some fairly cheap resources on Gumroad, and if you're up for it, you can drop some money on some of his full courses on his website. Coincidentally, he happened to have dropped a lot of courses via Proko today, so that might be worth checking out! At the end of the day, understanding proper light on form is how we make things realistic. Different materials will react differently based on different lighting scenarios, so understanding light on form is definitely the foundation you want to tackle. As far as style goes, fantasy happens to have a wide range. Wizards of the Coast is one of the biggest names, and obviously their official art leans toward the painterly/cinematic/realistic style. HOWEVER, Critical Role has a huge following, and their art tends to lean towards something more graphic and cartoony. Critical Role's 'cartoon' style however seems more anime inspired than the work you have shown here. Not saying you have to lean towards that style though, as your fundamentals get better and better, your natural style could be the defining feature of fantasy work in the future. No one can really say what's right so it's best to focus on what you enjoy. Hope this helps, and hope to see more of your work! Fantasy happens to be my favorite genre to work in as well

Hello Alex, Okay let's take that off the way first... Ahem.... THE STYLE COMES NATURALLY, you don't need to "search" for it. Your "style" is an outcome of your knowledge, skill and the things you love. The main issue here is the way you try to shade and render your illustrations. You rely too much on effects and I can tell that because everything is rendered following the same method. For example, on the lady with the pink pants, Her whole outfit and body have the same shiny feeling and effects, like she's made from plastic. And the light source is all over the place. I can tell by looking at it , that you used a "multiply layer" and a "color dodge layer" on top. Layer modes work great, but relying on them too much, is a bad idea. Make the layer modes to work FOR you, not the other way around. How? -Do some research on "Color theory" Learn how colors and different materials behave with light ( reflective or not ). -And how a "light source" works. WHAT TO STUDY ? Here, Marco Bucci is AMAZING with color, shading and rendering, and you can learn a lot! https://www.proko.com/lesson/painting-skin-tones-and-how-light-affects-color-marco-bucci/discussions

Hey Alex! I love the different charcters and the variaton of designs!! Very well done! Also you have some cool poses and a fair understanding of anatomy -Althought this is something that has to be constantly studied and improved. As for the style, I don't think there's anything wrong with it. If you like pushing proportions, face features and using saturated colors it's totally fine. As you pointed out, I think your biggest issue is in the material rendering. All of the items within your designs (or most of them) seem to have the same specularity, which is the capability of an object to reflect light. This, when different materials are placed under the same light, translates on different value ranges for each of the materials. For instance, the value range of a piece of woof will be much smaller than the value range of skin, when they are both under the same light. This being said, I'd recommend you that you do studies on different materials. Mostly on different fabrics, armor and skin if you want to apply them to your characters. I'd also recommend you to watch Marco Bucci's mini series on character design where he approaches this issue -among many others-. And if you didn't know Marco's channel he has plenty of usefull videos, some about lighting and the different types of shadows that you have to face when painting. Pretty useful. I hope this was helpful!! https://www.youtube.com/watch?v=Nx2Q3ypuTVk