Hi there,
If he just finished shedding there is bound to be done leftover pieces that didn't come off clearly. I would never recommend pulling it off, as it may not yet be ready and you could injure him by forcing it off.
A nice soak could help loosen it up, and I actually bought each of my dragons their own toothbrush to help gently scrub at stuck on shed. Unless the shed is cutting off correlation, there is really no reason for concern. A dragon that young will be shedding again soon