Science Fiction Blue Mystery Fear Intrigue Pain Uncomfort Sister Book Cover Ideas with Clouds Silhouettes Moon Title Darkness City Lightning Crown Nighttime Poison Velociraptor Brother Chipmunk

The cover depicts a nighttime scene dominated by a rich blue palette. The moon hangs high in the corner, casting a silver outline over the silhouettes of a sprawling, futuristic city. In the foreground, the teenage brother and sister stand back-to-back, each slightly turned away. The boy has a teenager with chipmunk ears and a tail on his left, while the sister has a baby velociraptor with glistening green scales on her right. Clouds swirl ominously above them, forming the shape of an abstract crown. Purple poison drips diagonally down from the crown and interacts with the title text in an unsettling manner. Lightning crackles across the deep clouds, lending an electrifying tension to the design.

The title, "Thunder's Claw," is written in sharp, jagged sans serif font with subtle lightning glyphs embedded in the letters. The author name, "Kaylee Umstead," appears in a sleek serif font with a silver hue at the bottom, balancing the composition.

The cover follows a diagonal arrangement. The moon sits in the top-left corner, with the city stretching toward the bottom-right. The characters are positioned centrally with the brother and sister visibly at odds, emphasizing their opposing directions. The title runs diagonally across the middle with the purple poison dripping onto it, while the author's name anchors the composition below.