First of all your text isn't that balsy. Don't big yourself up from what you do (classic mistake) big yourself up from the positive responses you gain from women. Which at the moment is nothing.
Here's what was wrong with the text from my point of view:
"Hey Boots!" < Good, giving her a nickname, a bad one at that and vague if you remembered her name or not.
"(uh oh, looks like you earned a new nickname)." < Too cutesy and slightly needy. To me this screams out "LOOK I GAVE YOU A NICKNAME, REACT! REACT! REACT!!!" Which she'll notice in a second as women do that shit to each other all the time. You want to make her HAVE to react not be TOLD to react.
We need to meet on thursday so you can show me your leapord prints." < Nothing wrong with this but you did it WAY too early if its the first text. She's not invested yet and you haven't given her any reason to want to meet up with you. All you've got is some stuff about boots and that you want to see her leopard print boots (gay much?)
Essentially your message screams "LOOK IM TRYING TO GET YOUR ATTENTION AND GET A REACTION OUT OF YOU!!!"
Also you're doing classic overthinking. Typical AFC signs. You need to condition yourself NOT to care if a woman responds to you or not.
"1) Just wait for 24 hours and perhaps she'll have waited long enough to feel good about respondig."
- Why Wait? You're talking in a "im gonna look at my phone for the next day or two in the hope she repsonses"
"2) Wait till tomorrow evening and write back saying something like "Hey Boots.

rereading that text, it sounded more forward than was intended. lol Nonetheless, you should still wear your leapord boots on Thursday

"
- Definitely not. All this shows is that you've had time to think about her (you're not busy) have overthought about the text and are now reacting to something she hasn't even done. In her mind if you send that text she's thinking "lol I could be busy, I could be on holiday, I could be doing anything but he's assumed he's in the wrong lololol."
"3) Just wait for a week and retext her with something random and dont even mention the past."
- THIS is what any PUA would do but don't "wait a week" spend that time going out, getting other girls numbers and practicing your game. Get laid, have fun, don't single out one female or overthink any texts you send any of them. It damages your game.