Sometimes the vibe is easier to show than to describe. The composer's Image and YouTube tabs let a reference do the talking, with your notes on top.
On the Image tab, add your Start image, or drag it onto the composer. It takes a JPEG, PNG or WebP up to 20 MB. The scene gets built around your picture and its mood carries into the music. A still is silent, though, so tell Chillframe what you hear in the notes box, like "slow melancholic piano, soft rain ambience".
On Plus, once the start image is in, a chip for an End frame appears next to it. With both frames set you can tick Not a seamless loop, for when you want the scene to travel from one to the other instead of circling back. The length you pick then becomes the time it takes to get there.
Paste a link on the YouTube tab and that video becomes your style reference. A video carries sound, so its genre, tempo feel and instruments flow into your album along with the look. Only the first 15 minutes are read, so link to something that shows its hand early. Your notes steer it from there: "warmer pads, slower tempo, heavier rain". A YouTube reference costs the same as any other video of that type and length, on Lite and Plus alike.
Type something that contradicts the reference and your version wins. A calm image with "upbeat jazz" in the notes gets you upbeat jazz, because a clash like that is usually meant. The channel or artist behind a reference never reaches the music either, only the style it suggests. For what to write in those notes, Write a brief that gets the video you want has more.