cut out helmet and glasses and make layer via copy, use stomp tool to erase face and original helmet
step 2 of 3
liquify face to a shape you want
step 3 of 3
use ctrl+t(warp) to shape eyes and helmet into alien eyes and ufo
change alien colour with ctrl+u tool
make other alien the same way
add source image for background, other one for lightning strike,use ctrl+t and ctrl+u to transform and colour
use text tool to add news banner
add some effects from effect gallery