How can I create WAP design, to get my own WAP address?
You can't. WAP is a technical standard to access information via a mobile wireless network; thus the standard is a series of technical specifications that are engineered and agreed to over a period of years by a standards body. The average user has no ability to design such a protocol, much less implement it.
If want to serve content via WAP, all you need is a domain name for your web site, and a version of the web site that is served to mobile browsers.