I am NOT an expert. But ironically, I have those smaller eyes, and work hard to open them up! So I have some experience in doing the reverse.
Like Lara said, do experiment with eyeliner. Liner on the waterline may work. Also try leaving it off entirely on the lower lid. Allison Harvard's eyeliner accentuates the large, round shape.
You can also use liner on the upper lid to straighten out the shape. Stay close to the lashes at the center and top, but don't curve all the way down to the outer corner. Straighten it out slightly and draw above the lashes. It might help to lengthen it past the corner, too, maybe (or maybe not) with a flick.
Other things: Don't emphasize the size of the eye socket with dark shadow.
A lighter color on the brow bone, and in the center and inner corner, will de-emphasize the size of the eye. But to try using some dark shadow in and above the outer crease. I think I see it on picture #2.
#2 shows some interesting effects with white liner at the inner corner, emphasizing the downward curve. Since this is her natural eye shape, it may not work for you; but you might try drawing it in (faking it) with a dark liner. Use a good liquid for very fine lines. Dabs of white shadow can do interesting things, too.
Definitely look at eyebrow shaping. Straight brows will do a LOT to minimize round eyes. In #1, the light space between the end of the brow and the outer corner of the eye shows how round her eyes are. You can minimize that by shaping the brows lower, and using dark shadow in the outer crease.
