I am quite skilled in advanced Wikipedia templates, and many of my contributions I am most proud of are templates.
For example, the advanced/intuitive structure of the following are due to my hard work:
User:Xolatron/User SW date-talk - my favorite so far. It is a userbox dislaying the current day's equivalent Star Wars date. That took some serious ParserFunction work there.
I agree to multi-license my eligible text contributions, unless otherwise stated, under Wikipedia's copyright terms and into the public domain. Please be aware that other contributors might not do the same, so if you want to use my contributions in the public domain, please check the multi-licensing guide.
Licensing rights granted to Wikimedia Foundation
I grant non-exclusive permission for the Wikimedia Foundation Inc. to relicense my text contributions under any copyleft license that it chooses, provided it maintains the free and open spirit of the GFDL. This permission acknowledges that future licensing needs of the Wikimedia projects may need adapting in unforeseen fashions to facilitate other uses, formats, and locations. It is given for as long as this banner remains.
Licensing rights granted to Wikimedia Foundation
I grant non-exclusive permission for the Wikimedia Foundation Inc. to relicense my media contributions, including any images, audio clips, or video clips, under any copyleft license that it chooses, provided it maintains the free and open spirit of the GFDL. This permission acknowledges that future licensing needs of the Wikimedia projects may need adapting in unforeseen fashions to facilitate other uses, formats, and locations. It is given for as long as this banner remains.