The website repairclinic.com not only sells parts for your dryer, but offers repair videos showing you how to replace that part too. Here's the video that I believe should cover what you need to do to fix yours.
Whirlpool Gas Dryer Thermal Fuse Replacement Part # WP3392519 - Repair Clinic
If that doesn't do it, they do have several other videos available for that particular part, and I'm sure one of them will be right if this one isn't.
Dryer Thermal Fuse WP3392519 Part - WP3392519 - Repair Clinic
Hopefully that'll get you going. As you work, take lots of pictures and once you're done you can use those pictures to create your own iFixit guide to that repair for those who come after you with the same problem. It's easy, fun and will earn the appreciation of the repair community!
Create a new Guide - iFixit
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