Depends of what you want to do really The first sketch looks more like a calm introduction, for like something that will follow it, or just a calm picture overall. The second one adds more drama to it, kind of like a darker way to represent the sign, as if you need to avoid grassy areas, and the following area is just messy, creepy or just a problem.
Definitely the second sketch. The perspective, if given the right lighting, gives the scene the sense of foreboding and doom that the sign warns about.
Devious Comments
The first sketch looks more like a calm introduction, for like something that will follow it, or just a calm picture overall.
The second one adds more drama to it, kind of like a darker way to represent the sign, as if you need to avoid grassy areas, and the following area is just messy, creepy or just a problem.