'tiny stitches' is correct and can be used in written English.
Example sentence: She had to use tiny stitches on the delicate fabric to ensure the seams were secure.
The hospital called in a plastic surgeon, who put 14 tiny stitches into his chin.
Chicago squinted at the rows of letters rendered in tiny stitches.
A spider would have been hard pressed to see her tiny stitches.
Candy watched her grandmother's hands shake as she pulled out the tiny stitches with her seam ripper.
The other device, the Endoscopic Suturing System made by C. R. Bard Inc., uses tiny stitches tighten the valve.
The Chinese have always been noted for superb silk embroideries, which are highly detailed in a manner requiring a multitude of tiny stitches.
Its cumulative weight suggests a rich tapestry of music, each tiny stitch and daub of colour vital to the overall picture.
OSTP is a tiny stitch in the fabric of federal science.
Each lace motif was attached with a tiny stitch and workers had to wash their hands regularly to keep the lace and threads absolutely spotless.
The worst leakage came from the approximately eight million tiny stitching holes along the seams, which no amount of glued-on strips of silk or applications of special secret-formula varnish seemed to seal.
Start with a tiny stitch at the seam line on the wrong side of the hem.
