The first step is to create your ember and flame shapes. This can be done by using a sphere for the flame shape and a cube with an extruded circle on top for the ember shape. Next, choose your light source and shadow settings in order to make sure that it looks realistic when rendered out of Blender. The last step in creating a spooky effect for your fire is to add a texture. This can be done by using an orange color map and increasing the intensity to 100%.