Psalms 8, maybe. It speaks to the seeming insignificance of man . . .
Psa 8: 3 ¶ When I consider thy heavens, the work of thy fingers, the moon and the stars, which thou hast ordained;
4 What is man, that thou art mindful of him? and the son of man, that thou visitest him?
5 For thou hast made him a little lower than the angels, and hast crowned him with glory and honour.
6 Thou madest him to have dominion over the works of thy hands; thou hast put all things under his feet:
7 All sheep and oxen, yea, and the beasts of the field;
8 The fowl of the air, and the fish of the sea, and whatsoever passeth through the paths of the seas.
9 O LORD our Lord, how excellent is thy name in all the earth!
Or James 3, perhaps, it talks about the influence of small things. Not the best example because the point is how easy it is for our teeny, tiny tongue to get us in trouble:
Jam 3: 2 For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body.
3 Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body.
4 Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, whithersoever the governor listeth.
5 Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!
6 And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.
7 For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:
8 But the tongue can no man tame; it is an unruly evil, full of deadly poison.
If you're looking for a scripture that says it's OK to be a little, short dude, you probably won't find it. Why? Because our physical stature is so unimportant that it barely rates a mention in the scriptures.
You want to know something else? God doesn't have eyeballs. He may not even KNOW if we're short. He does know if we have "spirits" about being short, though. If we have thoughts of inadequacy because we're short (or superior thoughts because we're tall) then that is sin and it separates us from God.
On the other hand, there was a story about a little runt of a guy name Zaccheaus but Jesus was able to pick him out of a crowd just the same . . .
Luk 19:1 ¶ And Jesus entered and passed through Jericho.
2 And, behold, there was a man named Zacchaeus, which was the chief among the publicans, and he was rich.
3 And he sought to see Jesus who he was; and could not for the press, because he was little of stature.
4 And he ran before, and climbed up into a sycomore tree to see him: for he was to pass that way.
5 And when Jesus came to the place, he looked up, and saw him, and said unto him, Zacchaeus, make haste, and come down; for to day I must abide at thy house.
6 And he made haste, and came down, and received him joyfully.