In my doubt about the the signal traces width. Actually power trace should be wider than the other signal traces i give the power trace width size is 0.5mm and other size width is 0.2mm
i come to my point signal width size depending upon the voltage or current???
Here is a good free website tool to help you to calculate trace widths. Its called PCB Tool Kit. Go to saturnpcb.com to download.
thanks for ur reply!!!