"I SURVIVED 100 DAYS" は、サバイバル企画向けの、コントラストの強いYouTubeサムネイルです。太い黒縁の巨大な黄色い文字が夜の森の焚き火と木の小屋の上にあり、右の3分の1は顔を入れるための無地の暗い余白になっています。自分のタイトルに差し替え、空いたところに自分の写真を入れて使えます。

Create a finished YouTube thumbnail in 16:9. Use a high-contrast survival-challenge scene: a rough timber shelter and a small bright campfire in a dense wilderness at night, with dark pine silhouettes and a few ember sparks, concentrated in the left two-thirds. Keep the entire rightmost third (x=67–100%) plain, uninterrupted near-black charcoal, with no props, text, patterns, or bright details; reserve it as clean space for a face to be added later. On the left, set the exact headline in two oversized stacked lines: “I SURVIVED” and “100 DAYS”. Make the lettering fill most of the left half, with bold uppercase condensed block forms, tight spacing, straight edges, and sturdy proportions. Render the letters in saturated bright yellow with a very thick, crisp black outline and a small hard-edged black drop shadow. Keep every word fully legible against the scene; do not add any other words, numbers, logos, or badges. Compose the headline in the upper and middle left, with the shelter and campfire visible as a supporting survival subject in the lower center-left, partially behind the lettering but not obscuring it. Use sharp visual separation between the detailed wilderness scene and the empty dark face zone. Palette: bright yellow, near-black, deep forest green, and restrained campfire orange. Thumbnail-scale readability, strong edge contrast, cinematic directional firelight, hard rim highlights on the shelter, crisp shadows, detailed but uncluttered scene, polished commercial key art. No watermark.