Don't crop it, expand yer canvas size now, to accomodate new shield. Weapon much improved, though it's concept is odd - is it a staff or a sword? It looks like it may be fragile. Head/face makes him definitely not human, and not elf either, more a goblin type dude, slightly dark, whereas "paladins" are typically benevolent human warriors, often on horses and religiously inclined, using good white magic/power, like a cleric. Opposite would probably be a Shadowknight.
Old shield was definitely disproportionate to that weapon, so good job -BUT- it now seems too big. Look at his armor/outfit, why is he lightly clad but then has a huge sheid. He needs heavier armor to balance out the new bigger sheild. Also, make the sheild more curvilinear to better match the style of yer crazy sword-staff thing. If it was me, he'd have no sheild and I'd probably make that huge sword thing a 2-hander, simplifying this guy's design.
Legs seem to be different thicknesses. His stance is a little odd, mainly due to his head's angle. The pose doesn't give a strong vibe, more like he's distracted looking down or cowering, the weapon being angled down contributes to this impression.
Feet could assist posture to look more natural by assuming more of a 45 degree angle, they're almost parallel.