Viewers who find you on Pinterest should recognize your channel at a glance. Your YouTube banner already has your colors, faces and style, so reusing it for board covers and the profile cover ties the two accounts together. When someone clicks through from a pin to your profile, a row of covers cut from the same artwork tells them this is the channel they already know.
Upload the 2560 × 1440 banner you made for YouTube, choose how many boards you have, and the tool cuts the art into square slices that sit side by side, each with its board name on top. You can move and zoom any single cover to frame a face or a logo, and the profile cover is cropped from the same image. The image is drawn in your browser and never uploaded.
How the slices line up
In even slices mode the covers are cut side by side from the middle band of the banner, from left to right in board order. Put your boards in the same order on your profile and the artwork reads almost like one strip across the grid.
Banners often have empty edges, because YouTube crops them on phones. If a slice lands on plain background, select it and slide it toward a more interesting part of the art, or zoom in on a detail such as a mascot or a product.
Board names that also help search
Board names are read by Pinterest search, so name boards after what people look for, such as "Beginner Guitar Lessons" rather than "Season 2". Keep the cover text short so it stays readable in the small grid, and use the board description for the longer version.
If you need more ideas, the board name generator suggests searchable names. For covers built from colors and fonts instead of your art, use the board cover set maker.