Mishnah Berurah — משנה ברורה

One should not make a blessing - All the later halachic authorities wondered about this: What is fixed/accomplished by him not making the blessing? There is still [the issue] that maybe [the law] is like the Mechaber and the requirement is to affix [the ציצית] on the extremities [of the garment] (ie. the far corners of the unfolded garment)... and how can one wear this [folded] garment? Behold, [a garment with] more than four ציצית is prohibited according to everyone (Meaning, that by affixing ציצית on the folds, you are causing there to be ציצית in additional places besides the real four corners) [See in Pri Megadim]. And they conclude by ruling that one should be careful optimally to not make a folded טלית at all unless it was stitched [together]... even with stitches [that are] spaced apart... because once he stitched it, it's not likely to open up again. And then, whether it's a square טלית [that he folded and stitched] or a טלית that started out too long [which he folded and stitched], he affixes ציצית on the folds and makes a blessing.