If i maybe make a guild charter a really big one!

what size could it be in photoshop??

i tryed many sizes but too small.. maybe you can help?

Try asking here, you will probably get more professional answers: Graphic Design

check help section it might help u with the sizes legaly

It really depends, you could try 850px × 1,850px perhaps (Its a matter of text etc.)
Post your graphic related questions here: http://forums.d2jsp.org/forum.php?f=246

Nope.. diden't work

Keep making it bigger until it suits your needs. If it seems as though it's getting smaller, make sure that the canvas isn't zoomed out and you are viewing it at 50% actual size.