@MissMushy I love how relaxed and fun your otter looks! Just chillin'!
I agree with @kylebeaudette as far as the legs go. I also think that the line going from his back to his tail, is kind of making it look like a lizard tail. Keeping the heavy weight stroke as the outline of the shape might help that.
Quick note: I'm not sure if your typeface for "The Mindful Otter" is just placeholder or the real thing, but I would consider not using Bradley Hand. My graphic design instructors drilled it into us not to use typefaces like Comic Sans, Papyrus and Bradley Hand when creating logos, as it will "cheapen" the brand since they are all overused. I would hate to see your super cute otter overlooked because of the font! Hope this helps.
Lastly, I really like your idea of changing out what's balancing on his foot. That opens up so many options! Great job overall!