How to take good "thirst traps"?

My gf wants "thirst trap" (her words) pictures. Both nude and not. I am an avid gym goer and in pretty good shape so I feel like it shouldn't be a problem. But I always feel goofy when I take one and think it's not thirst trap worthy. And dick pics just never seem appealing to me. Like how do I take a good one? I know it's my gf and I should just get past it. If it's embarrassing whatever she won't make fun or anything. But I want them to be a turn on for her since that what she wants. And I have asked what she wants and she just says surprise me. I need guidance haha.