I love this! The astrological signs drawn by children are great :) It is too bad Kinga Rofusz wasn't available, that mockup with his illustrations actually is amazing. His style is very well suited for public transportation. My favorite of your entries is #1 with the singular flowers and the illusion of an open wall and field and trees beyond. That would really give such a nice feeling of space, and a calming vibe, to that station.
BTW, RE the bandwidth issue, that has been happening to users without a lot of SP. If it happens again to you reply to me in comment here and I will be happy to delegate you a small amount of Steem Power until this issue stops happening.
Here is article about bandwidth:
https://steemit.com/steemit/@carmalain7/why-you-have-no-bandwidth-if-you-re-a-new-steemian-like-me
Much love - Carl