Can someone render this skin for a A3 poster?

For A3 you'll really need to increase the resolution of the skin - 2048 minimum, 4096 best. Do that and I'll have a go when I get round to it - is there a time limit?

How I change my resolution from 1024 to 4096?

Quote from Rakkertje_17 :

How I change my resolution from 1024 to 4096?

what program did u use to make your skin?

the best way to make it high-res is to start from scratch again but this time make your width 4096x(whatever the ratio in height is).

I used Photoshop CS

Yes, don't just resize it, that'll be exactly the same as it being 1024. The way to do it it to make it from scratch. Use Vectors too if you can, as they are scaleable, and hence can be resized with ease.

Here a 4096

Quote from Rakkertje_17 :

Here a 4096

No, that's not good...

remember:
resize 1024 to 4096 -> bad
Making new skin in 4096 format (vector recommended!) - good

To make high quality print (300dpi) render itself should be 89100x126000 pixel.

He did redo the text

I wonder what poor skin he painted over to get his team-skin...

Don't know where you are talking about

That's why vector's rock. Even when you resize them they bump up there quality.

lets all make our skins in autocad

Quote from ramtech :

lets all make our skins in autocad

why!?

just joking about the "vectors" part

There are some adobe products to make vector stuff.
Making skin in autocad...hmm

yep, u could always use Adobe Illustrator or Macromedia Fireworks or Freehand to make ur skins in vector
none of them is as easy, and as powerfull as Photoshop though