Envelope sleeves

I would love to make my own envelopes. I could save lots. I would also like to spice up the envelopes with liner templates.

Envelope templates- http://www.paper-source.com/cgi-bin/paper/item/Envelope-Template-Kit/2506_006/40713000.html


Envelope liners- http://www.paper-source.com/cgi-bin/paper/item/Envelope-Liner-Template-Kit/2506_006/40712906.html