Weird question, but what would you think of someone who...?

What would you think if you saw one person out taking a walk with just themselves?

I'm asking because while I love the outdoors and would like to just go lay out on a blanket in the middle of a grassy field nearby, I am a bit self conscious of what passersbys would think of me, an 18 year old girl, sitting or laying alone in the middle of a field watching the clouds?

The "field" I'm talking about is actually just a big grassy area around a nearby neighborhood and visible from the street.

I worry that, especially because I like to bring my bag or a backpack with a blanket and stuff to draw or write with, people will think I'm a runaway or something.

It makes me uncomfortable and self-conscious because the one time I finally did go out and do this people stared and cars slowed down etc.

So tell me, is it so weird for someone like me to just go out and enjoy the fresh air once in a while?

Any suggestions or advice?