Design "Wall" Monday

This is my first post with a design "wall"!  Well, it's not actually a wall, but a floor covered with a sheet since I have baking soda on my carpets and want to leave it on ALL day before I vacuum, but I really wanted to write this post and did not want to wait. (I know it is a run-on sentence, but that is how I usually talk, and really fast when I'm excited) Remember my hexagons that I started cutting here:  http://missyscakesandaprons.blogspot.com/2012/04/cutting-hexagons.html ?  I have been hand piecing them together.  I decided to go with the traditional method of just sewing them together instead of using paper piecing.  I think next time I will try the paper piecing for a crisper look though.
This is what I have done so far

I still need to add the second layer of hexies to my top flowers, and I have several more cut out.  I didn't plan it this way, but I love how the orange brings out the orange in the tabbies, the purple brings out the purple in the flowers, the green brings out the green in the leaves, and the blue brings out the hints of blue in the sky.  I was not sure if these colors would work at first (it is what I had in my stash), but I'm loving it.  I was going to do all purple flowers, but I'm glad I didn't now.  This way the panel is still stand alone.  I'm also surprised how FAST the flowers are coming together since I have not had much time to work on it.
 It looks like my throw is going to be twin sized!
I'm thinking of having just one layer of blue between each flower, since my flowers are so big.  They are 16 inches!  My hexies are 3 1/2 inches. How many flowers should I make?  Should I make 12 and have six on top and six on the bottom? I have "extras" that were left over after doing a set of colors, like 3 purples which is not enough for more flowers, a lot of neutrals, and some of every color.  I was thinking of using them to make a single line border (around the quilt) of all the hexies with the colors all mixed together, and then a border of blue hexies, before finishing it off.  I have another purple that came with theses batiks that i can cut if needed.  What do you think?  I have no idea what I'm doing and am just making it up as I go.  Any suggestions are welcomed.   I'm also not sure how to add the border, do I just cut the sides to make them even after stitching or do I cut the blues in half before stitching them on?
As you can tell, Pippi had to pose for the camera as soon as I put my material down - silly girl.
Happy Quilting,
Missy