Get A Tattoo

My birthday is coming up and I was thinking about getting my first tattoo! I really like the idea of a butterfly tattoo (they've been very symbolic for me). I'm indecisive about placement, I really like the inner upper arm and the ribcage but do those spots hurt more/less? I would kinda like to place it somewhere less visible but I still want it to look good. Please share your opinions on the placement/what would hurt less and maybe some advice! I would really appreciate it :)

So, I plan on getting two more tattoos in the next year, but I'm like uncertain on where I want them.
The first tattoo is going to be depicting violets around a green brooch (to show off all my love for Violet Evergarden.) I think I want this one on my thigh....I think, lol.
The second tattoo is gonna be a space/constellation theme, with the Latin phrase "per aspera ad astra."
I feel like the best spot for this one is my back, but half of my back is already covered and it doesn't really go with the cherry blossom tree that's already there. Lol.
Thoughts?