it sounds like you're trying to use your pinky to hit the command key. it's a lot more comfortable if you use your thumb to hit the command key.
it's a lot more natural to hit the command key for me, since i only have to curl my thumb in a little bit to hit the command key, whereas i can't reach the control key with my pinky unless I shift my hand.
From what I found out in this typing course I took if you're pressing Ctrl + C you're meant to use the pinky on your RIGHT hand and hit C with the LEFT (middle finger).
The same applies to Q, E, W, and all other keys on the right side of the board. Switch it the other way around (pinky on the left Ctrl) if you're hitting P, O, K or any other keys on the right side.
That's the "proper" way of typing, but it's not always easy to remember, especially when you're holding the mouse on the other hand and copy/pasting on the fly.
Also, I'm not sure how this properly translates on a mac (i have a mac at home but i'm on my work PC right now ...)
it's a lot more natural to hit the command key for me, since i only have to curl my thumb in a little bit to hit the command key, whereas i can't reach the control key with my pinky unless I shift my hand.