sucking my gfs strap

so 2 prefaces:

1. yes i am over 18 and so is my gf and we’ve discussed this before and anything we do will be consensual so don’t worry

2. i really don’t want to hear about how you don’t understand the point in lesbians sucking strap ons; you don’t have to understand, that’s between me and my gf

anyway, i really want to suck my gfs new strap and she seems to want me to too but i’m super nervous. i’ve only ever been with women and i’ve never sucked a strap before. i know she can’t feel it obviously so i’m not super concerned with how to make it feel good but i’m more worried about how i’ll look/sound doing it and also just being able to get it down there at all lol so i’m looking for some advice