https://lh3.googleusercontent.com/-...0/mr3srwIh7E4/w800-h800/4-v9bm1c-original.jpg as original picture has been removed.
How about using full sentences....
Since both its "cap" and legs are covered in similar mushroom-like skin it felt appropriate to describe both in one sentence.
Also, aren't spears a little long for a quiver unless it has an "efficient quiver?"
Not necessarily, it depends how long the spear is. Historically there are examples of people carrying a shortspear and/or multiple javelins in a quiver. I did wonder about using "case" or "harness" instead, since the SRD only mentions quivers in the context of "arrows" or "projectiles".
A pale-blue creature the size and shape of a sprite with a feline face, whiskers, and large dark eyes steps into view on the mossy forest floor. The top of its head resembles the broad white cap of a mushroom. Its legs and feet are likewise clad in white mushroom-like skin. Slung over its shoulder is a quiver of tiny spears.
As indicated in an earlier post, I don't favor having a monster description say what it is doing or where it is, so I'd cut the "
steps into view on the mossy forest floor" bit.
The "likewise" is a good modification.
As for the spear-container, let's chance it to a "case" for now...
A pale-blue creature the size and shape of a sprite with a feline face, whiskers, and large dark eyes. The top of its head resembles the broad white cap of a mushroom. Its legs and feet are likewise clad in white mushroom-like skin. Slung over its shoulder is a case containing several tiny spears.