i am new to blender and i have an issue with Gus the gingerbread man

i am very new to blender and i am doing the first tutorial gus the gingerbread man in the manual on blender.org and am having a small problem when rendering the head shows up differently does anyone know what causes this and how i can fix it all help is appreciated thanks!

I think you’ve probably got double geometry there - multiple faces on the same spot. Try W -> Remove Doubles and don’t forget to use Ctrl+N to recalculate normals afterwards. If it’s not that, maybe you’ve got a full face but are mirroring it anyway or some such issue.

you are right the mirror effect was still on when i tried to add the head thanks so much! that fixed it