It is not us that are telling God how he should have done things, He is telling us how he did it by his own Word - the Bible.
Is He though? Or is He just providing inspiration? The Bible is filled with stories that gave its readers and followers simplified concepts, i.e. the beginning of the earth. The Genesis story basically provides the concept of things coming into being, but it is not scientifically accurate. The Bible is a religious text and is not meant to be accepted as scientific truth.