Help in developing a spoon head

Hello,

My name is Silver and I have started my first SolidWorks university project in developing the head of a spoon. I'm getting this 3D printed and cast in bronze, and have already developed the knife and fork head in Vectorworks, so I am not a complete novice when it comes to CAD.

I am, however, having incredible trouble trying to join my solidworks faces together to get a solid part and would appreciate any help you can offer.

Essentially, I have made a few lofts and surface fills but the program won't allow me join the remaining gaps. I must be missing or forgetting something crucial.

Please, if anyone could have a look over this and guide me in the right direction, I will be so very thrilled.

Thank you in advance!

SolidworksDrawings And Detailing