I've looked at the icons and I have to wonder where's G and H keys.
Also, you should center the letters in each icon. Currently W is placed quite high then X Y Z and 0 to 9 are slightly off upwards.
Fix those icons and it should be good to go.
Hello again! It's good to see you, Thanks for the feedback I'll fix these icons as soon as I get back home, I'll also update the pack adding new icons :)
