Didn’t realize you could do this

Lay the plastic sheet or tarp on a flat surface in a well-ventilated area to protect it from bleach stains.

Fill the spray bottle with one part bleach and one part water, using the measuring cup to ensure equal parts.

Put on rubber gloves to protect your hands from the bleach.

Place the flannel shirt on the plastic sheet, smoothing out any wrinkles.

Spray the bleach solution onto the shirt, focusing on areas where you want the most color change. For a more random pattern, spray lightly and unevenly.

Allow the bleach to sit on the fabric for 10-15 minutes, checking frequently to ensure the desired level of bleaching is achieved.

Once satisfied with the bleaching, rinse the shirt thoroughly in a bucket of water to stop the bleaching process.

Launder the shirt separately in cold water and hang it on a clothes hanger to dry.

Once dry, style your new bleached flannel shirt as desired.

For a different look, try using stencils or tape to create specific patterns or designs on the shirt before applying the bleach. You can also experiment with different colors of flannel shirts, as the bleach will react differently depending on the original color. For a subtler effect, dilute the bleach solution further or reduce the application time. Additionally, consider adding fabric dye after bleaching to introduce new colors and create a multi-tonal effect. Always test bleach on a small, inconspicuous area first to ensure the desired result.