I have Create one Custom Plugins with following step.
1) I go in the Plugins Folder ->right Click on it -> Add new Project and select new Class File with name of "Nop.Plugin.Payments.PayPalDirectTest".
2) I have change the Debug Output path and set "..\..\Presentation\Nop.Web\Plugins\Payments.PayPalDirectTest\"
3)Next i have copy the whole file of "Nop.Plugin.Payments.PayPalDirect" and paste into the my custom plugins "Nop.Plugin.Payments.PayPalDirectTest"
4) Change the setting in "Description.txt" file with below setting.
Group: Payment methods
FriendlyName: Credit Card
Author: nopCommerce team
5) After then when i build the Project it can not create DLL in to Plugins folder
Can any one have any idea!!!
Thanks in Advance!!