Originally Posted by Nobuddie

Thank you raydark, but the problem is, that I am totally new to Photoshop and really have no idea on anything. I have no idea how the tools are called in english, because I use the german version and I really, really never did anything with any art program. ;o

But thank you, I'ma look up some tutorials for Photoshop.

(OPTIONAL SPHERICAL EFFECT!)
STEP 1:
Create a new layer, and place the object you would like to spherize. (In this case, your orb thingy)


STEP 2:
Cntrl (CMD) + Click on the thumbnail canvas in the layer menu, to select to object you would like to spherize.


STEP 3:
Go to 'Filter > Distort > Spherize'


STEP 4:
Have sex with the controls, like this;


STEP 5:
Click okay!


Done.

REAL BEHIND THE ASS BLUR TUTORIAL:
STEP 1
Take the object you wish to add a blur behind, and put it on a new layer. (In this case, your sphere thingy)


STEP 2
Right click on the new layer and select 'Duplicate Layer...'


STEP 3
Select the layer 'Layer X copy' and go to 'Menu > Filter > Blur > Gaussian Blur'


STEP 4
Fiddle with the controls a bit, A couple of pixels should be fine for your pixel art.

Done.