Shape not closing properly with pen tool (I'm new to all of this!)

[ashaapple]

Hey everyone, I am brand new to affinity designer/ illustrator and all of that sort of thing. I am playing around with the pen tool since I had always had a hard time with it in the past, but I finally decided to try to learn it. I was tracing my thumb and for some odd reason, when I went to close this shape and then fill it, it is not filling clean and nicely. I am not sure what is causing this and I need help understanding. Thank you for the time you take to read this and help me gain more knowledge and understand.

 

See below the file I am currently working on and a screen capture of the problem area as well. Thank y'all!

IMG_3372 hand prac.afdesign

[firstdefence]

Would be simpler to just redraw the curve around the thumb but if you wanted to join all those closed curves you would need to do a bit of work. 

IMG_3372 hand prac - thumb repair.afdesign Saved with history so you can jog back and forth in the history panel. 

[Hilltop]

Make sure you select the Node Tool when moving through the history of firstdefence's design file.