To use paint bucket in photoshop follow the steps given below:
- Go to the Layer’s menu and select the Layer that contains the object that you want to color.
- Use Lasso tool to select the area that you want to color.
- Choose the Paint Bucket and choose the color of your choice.
- Drag the bucket icon over the selected area and just click it.
- Make sure that the object is an enclosed figure without any gaps, otherwise the color will spill on the entire layer.