Today, I practiced on Magnetic Lesso tool in Photoshop.

Picture I used: 20131214_055606

Using this tool to select the sunflower takes time, but the tool is more effective than magic wand tool. I used eyedropper tool to help me select the colors I desired from the sunflower to put it in the background. Finally, I used gradient tool to full the background.

Sunflower after Photoshop: