The napkin (το σουδαριον). Already in John 11:44 which see. This napkin for the head was in a separate place.

Rolled up (εντετυλιγμενον). Perfect passive participle, predicate accusative like κειμενον, from εντυλισσω, late verb, to wrap in, to roll up, already in Matthew 27:59; Luke 23:53. It was arranged in an orderly fashion. There was no haste.

By itself (χωρις). Old adverb, "apart," "separately."