A participle phrase will begin with a present or past participle. If the participle is present, it will dependably end in ing. Likewise, a regular past participle will end in a consistent ed. Irregular past participles, unfortunately, conclude in all kinds of ways [although this list will help].
Since all phrases require two or more words, a participle phrase will often include objects and/or modifiers that complete the thought. The pattern looks like this: