[Plugin: Custom Field Template] A plug-in based on created "custom fields"

First of all, thank you a lot for developing this wonderful plugin, which made life easier for me and for the rest of us.
How can I build a plug-in based on the custom fields created with your plug-in?.I guess this will help a lot of plugins developers and simplifies the process, don’t you think?

http://ww.wp.xz.cn/extend/plugins/custom-field-template/