Here's a very brief video of Nate signing PUMPKIN. Click here for the ASL version of PUMPKIN (thump the back of your non-dominant hand with the middle finger on your dominant hand). Nate makes the sign (using an "approximation") by tapping the back of his hand with his finger. It's very common for children to make signs a little differently than the "correct" adult version. Just as with verbal speech, it's important to acknowledge their efforts at communication. Continue to make the sign correctly and with time your baby will likely perform the sign more accurately - especially as their fine motor development improves.