Upload & Sell: On
+1 @ possible perspective change. The extra negative space in #2 helps mitigate that a bit.
"As is" isn't overly problematic for me though. With the person having their head tilted downward, this vantage point works okay. Much lower and it might alter that in an unflattering way. For me, it isn't the backpack itself ... it is the "little kid" backpack in context of where "big kids" hang out. The haircut and earbuds tell part of the story @ the "big kid". Lowering it might improve the composition of the backpack, but it might also shift the "natural" feel to the overall scene. Either way I think has some (differing) benefit ... but, your vision of the "playful" interaction is what makes the pic.
Serendipitously, the haircut lines also point down to the backpack, and mimic the lines in the should straps and the seam lines in the jacket ... all point to the backpack.