Knit stitch mistake

I’m a beginner and working on my first pair of socks. I’m am doing the knit stitch and have come across a mistake that I don’t know how to fix. I think that I didn’t bring my yarn completely around my needle on the left side (I thought I did). I have what looks like two stitches that make an X on my needle. Can anyone explain how I can fix this?
Thanks, Heather

Could it be that you didn’t get the knitted stitch completely off the needle tip. I have done this a time or two. All I do to correct it is to look and see which loop needs to be pulled over the other to make your stitch complete.

It worked!! Thank you so much! Happy Holidays, Heather