Gradient Softness

One question and one alone. How did this guy make the blends using a gradient (I think) so SOFT! See how the bottom of the pics blend from white into the pic. http://www.anime-assassins.com/wallpapers/800/hellsing2.jpg
I CAN NEVER DO THAT!!! CALL me noob call me stupid but please show me, because my gradient blends from white into a pic looks like a freakin line

Well that shouldn't be that hard...
Not sure if I did the thing you wanted to be done but...
just make a new layer fill it with white color and put it on screen on the layer option then choose what you want to delete and press CTRL + ALT + D [feather] and put something like 30-50...
And press del
That should do the trick.
This is what I made in ten seconds

http://www.kolumbus.fi/dj.charisma/test.jpg