first you need your render I am useing this 1 mmkay

next you easily open A new thing and set it to 400x140 and fill it with a colour from za render mmkay
you shoul now have this kayz

then add your render hold shift when you resize so you don't kill it mmkay
class you should now have this

now go to edit and press define brush preset and go over the thing you have so far so it looks alot darker
make 2 brushes one with background hidden (optional) you only need to put one on
if you have put the brush on once it should look like this

twice should be darker
Now add A. c4d or abstract brush and do a gradient map and put a lighten version of your background it should then press control e to merge down look something like this

Where doing fine at the moment now we need to duplicate our render and motion blur it filter>blur>motion blur set the angel to 45 and distance to 35 put it behind the good render and duplicate it till it is covered the whole background now set the blending options to overlay soft light and try out others I am using overlay and I have this so far you should have something like it

Now you can if you want set the render option to lighten the use a soft or grunge brush to get it into blending shape mine is not to great but I have this now

Add some filter play around make a boarder and you’re done
Note mine has no boarder

Please remember I made this ages ago and I know this kind of sucks lol