Eye in Vortex

Open both of the photos below in Fireworks. First copy the vortex picture into a new document.

Then copy the eye one, so the eye photo is on top. 

Your Layers should look like this...

Select the Lasso tool, and set the feather to around 25 so we get a soft blending.

Then select the eye area you want to keep visible.

Then Add Mask using the button at the bottom of the layers panel.

If we want to hide some more of the eye, we can select another area with the Lasso, and delete (just make sure the mask part of the layer is selected, should be yellow outline).