The goblin models need a bit more of a scranny look. Especially some scars, a meaner look and change the fingernails to a color of a claw and not pure white. Also each goblin model should have some small tweaks to szie and face so that they don't look perfectly alike. Lastly the artist looks to be trying to prevent clipping by keeping some distance between the goblin hands and the elf, but this is hurting the impression of movement and power far too much.