Question

my uncle marty has some strange habits, including eating meat with a spoon Is this sentence written correctly

Answer 1

its not correct.
it should be like this :

My uncle Marty has some strange habits, including eating meat with a spoon.

hope this helps you

Answer 2

Capitalize My and Marty and put a period after spoon and you could of did this
(Is this sentence written correctly)

Corrected the sentence :P

My uncle Marty has some strange habits, including eating meat with a spoon.
(Is this sentence written correctly)