Original Morty Pkmn HeartGold Style

[JarJar]

The right arm looks like an overcooked noodle.

Unless you're refering to the color, that's a problem with the original sprite.

no it isnt, part of the scarf is in the way of part of his arm, you removing it made it look off.

and it still looks like the scarf is still there under his shirt, you'll need more than just editing to pull this off, a sense of anatomy is required too, and perspective.