"Your teeth are sharp."
Ho'Du'lIj jej means "your sharp teeth". It is not a complete sentence since jej is now acting as an adjective and not as a verb - there is no verb in the phrase, so it is not a sentence. This phrase can be used as a noun in another sentence. As a noun in a sentence, it would certainly be possible to add -'e' onto it, and, in fact, if you used it as the subject of a pronoun as verb, the -'e' would be required. When -'e' is added to a noun + adjective phrase, it goes at the end of the phrase, so does indeed appear to go on the verb being used as an adjective:
nuHmey bIH Ho'Du'lIj jej'e' "Your sharp teeth are weapons."
You can't add the 'e' suffix to a verb as far as I know. What are you trying to do? What is the whole sentence that you want to make? Are you having jej follow the noun to have it act an an adjective? And then attach 'e'? Or? Please explain in more detail because I do not understand.