http://www.crystalxp.net/galerie/en.id.520...-wallpapers.htm

Can someone explain me how to make that kind of effect?

That's very easy sosoe222 , just make curves with Pen Tool fill them with brush stroke of 1-2px and  merge all the layers , give layers Outer Glow .

That's it

PS Topic to be moved

Can't make those curves well, damn it Can you post your outcome, please?

To make the curves use this tool (red circle) and this adjustments for the glow (I dont know the english for "superposition" but it's 8th of the list ):

Sorry for my english  

i think superposition is overlay.  

Actually, it's Screen

I came up with this:

Nice, but the lights on the background are maybe to straights .

Thanks, man! But I'm too stupid, I can't manage to make those curves

looks kinda easy... i`m going to try it...

edit: i either use a too thick or too thin brush... what size should i use for the brush?

Mmmm... brushes... good idea...

[EDIT] Still can't make it... what did you exactly do with that pen tool?

Thanks for the help k_millio

ASHAR: good result.  

A brush of 2px size would be suitable for the effect .

First make a curved path with the Pen Tool now Select Brush Tool and pick a hard circular brush of 2px radius set the foreground color to white create a new layer with the new layer selected , press A to pick the 'Direct Selection Tool' , right-click on the path and select 'Stroke Path' , select Brush from the list but do not enable the 'Simulate Pressure' option .

Good Luck

i like to make high resolution pics... like 1280x1024 and 2px is kinda small for that...
i can`t get the outer glow to work either... it`s either to small or to big...
photoshop is a powerful utility ... but i still have much to learn...

edit: i came up with this... any advice?... `cause i don`t like it...

edit: sorry for the long post... but i made another version... i used a bigger brush and came up with this...

edit:last one i promise...

can anyone tell me wich one is the best and how to improve it?

Really cool, mate! I will try out myself later!
I like all your wallpapers here! You're getting better & better!

your results are good cellblade

it is just a matter of how you draw your curves, and you can get very good results.  

Great results,
Ashar, What blend mode that you used in the outer glow?

a bit of "off topic question"... why is it called lightning bolt... because lightning has straight lines...and hard angles...
this is more with curves... i call it some type of aurora... but it`s only my opinion...

For this wallpaper i'v used a 2px & 1px brushes

I have used 'Soft Light' and 'Overlay' as blending options for the Outer Glow , actually the glow of the curves is a complex fusion of different layers having different Blendiing modes

Background terrible is ASHAR, what gradient you used for background? Anyway, comment the stripes only please:

It does look terrible in browser because it resizes the image, so I suggest you to save it and view it

the stripes are good... i will post a screenshot with my blending settings of the glow because i guess that you need some help there also...

edit:
this worked for me...

if its not good enough... just play with the spread, range and size... until u get the effect you want...

That's what I actually done

Here's improved version:

Sorry for the dimensions. I made it for my widescreen monitor. Thank you all for spending time here

Here's a new one