I actually found this *recipe* online last year and tried it myself. It's awesome and since Litha is this month I thought I'd share!
Now, I suggest using a mortar and pestle to blend and powder the herbs when making incense. There are different ways to make incense. You can make stick or cone incense but that's a bit more involved. The easiest kind to make uses loose ingredients, which are then burned on top of a charcoal disc or tossed into a fire.

This recipe is for loose incense. As you mix and blend your incense, focus on the intent of your work. Since Litha is all about the sun and its strength, this is a fiery and powerful incense.

You will need:

• 3 parts myrrh
• 1 part apple blossoms
• ½ part bay leaves
• ½ part cinnamon bark
• 1 part chamomile flowers
• 1 part lavender flowers
• 2 parts mugwort
• ½ part rosemary

Add your ingredients to your mixing bowl one at a time. Measure carefully, and if the leaves or blossoms need to be crushed, use your mortar and pestle to do so. As you blend the herbs together, state your intent. You may find it helpful to charge your incense with an incantation.

Store your incense in a tightly sealed jar. Make sure you label it with its intent and name, as well as the date you created it. Use within three months, so that it remains charged and fresh.