Question

mohit create a drawing in tux paint. now he wants to fill colour in the drawing .how can we do that​

Answer 1

Click on 'Lines' on the left, and then look at all of the tools/brushes on the right. To use these, you click on one spot, drag a straight line, and take it to the end of where you want it. That is only when you want some type of precision. When you are just 'coloring in a spot', pick the paintbrush and just color away.