I changed the image of the birds to a image related to music so we can feel the festival atmosphere in the poster and add bright hot pink color to the background to make the whole feelings of poster little more active. I changed the text to read 'coming soon in 2019 - join us - tribe.com'.
Also I tried to find all the images which were not linked but it did not come out so I changed to the new images with links which have a cultural, creative, festival vibe.
I put the logo as well, simple without text. I wanted the logo to gives people to see the music with festival in it.
If you have a question, please let me know!