Open a new image 400x400, transparent
Select the text tool. Type the letter "b" using Dizzinz's Sweetheart font, size 300, floating, anti-alias. Use a light color; we will be deleting this layer later, but you want to be able to see the shape through your grapevines. Deselect the heart. ("Ctrl" "D")
*Add a new raster layer.*
Set your foreground color to a darker color than your heart. Draw a squiggly line the shape of your heart.
Open one of your wood textures. I used this one:
Minimize this image for later use.
Click on your squiggly line to select it. Flood fill with your wood pattern. Keep the line selected. Add an inner bevel with Eye Candy using these settings:
**NOTE** If you don't have Eye Candy, you can get the same effect with an inner bevel. I used these settings: