The most common sentence pattern in English is subject + verb + direct object (S+V+DO). For instance, The dog chewed the bone. But sometimes it’s more interesting to vary the pattern and put the verb first: Down the street ran the dog.
Try to avoid starting sentences with There is, There are, Here is, Here are. But if you do use one of those constructions, be aware that the subject is not There or Here. It will always be the first noun or pronoun after it:
There is someone knocking at the door.
Here are the reports you asked for.
There are two dogs fighting over the bone.
Here is the book you asked to borrow.