So, Hope You Are All Good :) Today We Will See How Can We Use A Combine Tool In Expression Blend. I Would Rather Say It MAGICAL OPERATION Because Of It’s Working. You Can Make Attractive And Simple Logos Through It. It Is Simple, Follow The Steps To Create Your Own Logo Or Whatever You Want. Let’s Take A Ride (:
https://cyracyed.files.wordpress.com/2014/07/micro-blend1.png

1. Open Expression Blend And Create A New Project. I am Creating XAML Window Store App. After Creating New Project A Window Will Appear. Go Into The Top Left Of The Screen And Click On The Assets Tab And From Controls Select Ellipse. Like This:
2. Now Drag The Ellipse In The Window Screen. Copy The Dragged Ellipse And Paste It.
3. Color The Ellipses.
4. Now Align Them.
5. The Combine Tool Is In The Object Menu. It Contains The Five Properties Unite, Divide, Intersect, Subtract and Exclude Overlap. We Will See It One By One.
6. Select The Object-> Combine -> Unite Option And See The Effect. Both Ellipses Have Merged And A Gap Occurs In The Center Of The Shape As Shown Below
7. Select The Object-> Combine -> Divide Option And See The Effect. Another Oval Shape Is Created In The Center Of Both The Ellipses As Shown Below:
8. Select The Object-> Combine -> Intersect Option And See The Effect. Only The Middle Part Is Left And Becomes Another Ellipse Of Oval Shape As Shown Below:


9. Select The Object-> Combine -> Subtract Option And See The Effect. The Left Ellipse Has Been Subtracted Along With The Intersected Part And Only Half Of The Right Ellipse Is Left As Shown Below:


10. Select The Object-> Combine -> Exclude Overlap Option And See The Effect. The Center Or Overlapped Part Is Excluded And The Horizontal Part Of The Ellipse Remains As Shown Below:


  11. We Are Done with Combine Tools. Now Lets Make A Simple Flower With The Help Of Combine Tools.  I Have Intersected Two Ellipses And Adjust The Center Point.
12. Now, Copy The Shape And Paste It on Every Rotation. You Will Get The Following Output.
13. Now Color It To Make It Attractive. You Have You Flower Here.Don’t Forget To Give Feedback 
It’s looking Cute;)
 Don’t Forget To Give Feedback :)