This is how I see it, as a kinda smart person and a practicing Christian.
creation functions like this.
God's day 1: created light and separated darkness
God's day 2: created the sky to separate water from water
God's day 3: gathered the lower water and separated it and the land formed. Plants grew.
God's day 4: God created the sun and moon to govern daytime and nighttime
God's day 5: God created creatures of the ocean
God's day 6: God created creatures of the land and ended with Adam and Eve
God's day 7: God rested
Human's comprehensions of 'day' is a full rotation of the Earth and we experience 1 daytime and 1 nighttime. However God's 'day' is different; God had 3 full days before the sun and the moon. So 1 Earth day cannot equal 1 God day. i do not know how people can screw this one up.
Aside from a few hiccups (The sun and moon I don't thing could have been created at the same time), this looks like how the big bang theory and life jelly blob theory (the actual term eludes me at the moment) worked.
All of this creation stuff didn't happen in Eden. There are no oceans in the area we consider to be Eden; there are ocean near it, but not in it.
Now here is where my personal belief (not the whole creationist community belief) begins.
in Genesis 4, after Adam and co. are banished from Eden, Cain takes a wife, but it doesn't say where this woman came from. She could have been a daughter of Adam and Eve, but it does not say if she was. It is possible that she was Cain's sister, but what is also possible is that the creatures outside of Eden also evolved to become humanish. I have another point to support my belief that people evolved outside of Eden.
This is after Cain killed Abel and Cain is asking for punishment:
Genesis 4:13-15
Cain said to the LORD, ?My punishment is more than I can bear. Today you are driving me from the land, and I will be hidden from your presence; I will be a restless wanderer on the earth, and whoever finds me will kill me.?
But the LORD said to him, ?Not so; anyone who kills Cain will suffer vengeance seven times over.? Then the LORD put a mark on Cain so that no one who found him would kill him.
So I ask people, if Adam and Eve and their family are the only people on Earth, who would find Cain? There must be other people besides the Edenites (people from the land of Eden) because clearly Cain was afraid of them.
jump forward about 2000 years and we have Noah and the flood. In the flood, Noah, his wife, his sons and their wives are the only humans saved. And they go on to repopulate the Earth.
So I were to visualize humanoids that existed, it would look like this:
God
Angels
Edenites (Adam, Eve, Cain, Abel, Seth)
People who evolved over the course of a God day outside of Eden (people like Cain's wife)
Noah was a descendant of the Edenites and the people of evolution and we are descendants of Noah.
So I am one of a few Creationists who do not believe that Evolution conflicts with Creationism. Again, I wasn't there so I don't know what actually happened, but this is my personal belief. I'm certain there are a few gaps that I haven't figured out yet, but it is getting there. Like the origin of Cain's wife; the bible does not say so I cannot say for certain.