Peace | with pixel art texture (Blender)

This rig is done in Blender, from scratch. If you know how to animate in Blender, try out this rig, you'll love it :) if not, please leave a comment down below pointing out the problem so I can fix the rig and simply reupload for anyone needing. 

This is a free rig since I'm still learning CG in general, considering this a kind gift for any future animator. However, tips would be much appreciated :)

Otherwise, happy Blending everyone. Thank you!