I'm not a huge beast drawer, but I've dabbled, and if ur worried about them looking too humanoid try instead basing them on animals! I always find it fun to combine a few animals, the more different they are the better, and then just keep adding appendages and limbs and messing with proportions until you have something totally new. I feel like maximalism is an easy way to differentiate your creatures from existing animals or people bc in nature there's a lot of simplicity and the more complicated it gets the less likely it is to exist in real life. If you're trying to create a creature that lives in an existing universe, try thinking of how it would evolve, and pick the most unique and absurd solutions to environmental factors. Like for example, a creature that lives in the tundra could grow fur, but it's more interesting to have a creature that deals with cold by being able to absorb a lot of sunlight, or having a lot more blood vessels, or having an exothermic reaction to air or even something like constantly being on fire, depending on what direction you want to take your world in. But if ur just trying to create a one off creature it's much easier to just pile features on and hope for the best