Concerning Hobbits Tolkien wrote in one of his letters:
I picture a fairly human figure, not a kind of 'fairy' rabbit as some of my British reviewers seem to fancy: fattish in the stomach, shortish in the leg. A round, jovial face; ears only slightly pointed and 'elvish'; hair short and curling (brown). The feet from the ankles down, covered with brown hairy fur. Clothing: green velvet breeches; red or yellow waistcoat; brown or green jacket; gold (or brass) buttons; a dark green hood and cloak (belonging to a dwarf).
The Letters of J.R.R. Tolkien, 35 (#27)
Concerning whether Elves have pointed ears here is
an artcle on elvish ears.
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