when you have been working hard on a piece of art only upon completion you end up destroying your art worksome of the artists may leave the canvas alone and decide to start the painting afresh others may be inspired to move on amidst the mistake and there those who can turn the mistake into something artistic.
You can rectify your watercolor mistake using the water spray method.You can cover the rest of the painting using the masking tape this hence helps the painter to rub off the color.
When painting is overdone in an area the only thing you can do to correct the mistake is using the pestle this helps to cover the area that was covered too much into a light space.
Being an artist and having an art block is very normal the only thing that makes a unique artist is how you overcome the art block.
The first thing to factor in is to ensure you take the block positively yes I mean you have to be happy about it, you may have painted canvases upon canvases for weeks, and you were doing great but all at once you end up hitting a brick wall this means that you did not become empty what it means is that it is time to start exploring new ideas and styles of painting this can be the break that you were waiting for.
The other best way to overcome artist block is to go to a community art center or even go to a local art school this implies even to the professionals who are also doing as a career this is for art inspiration.
Going to an event with your friends can be very important since you can be able to be inspired by what you see maybe for a hike or even in a road trip you can sketch what you like and at the end of the day find the art blockage is gone.
The other thing is calling a fellow artist to your studio and let the artiste critique you hence he can help you improve first and then during the improvement you might find some inspiration that may lead you to paint new canvases.
You can visit an art exhibition by doing this you can be able to see what people are painting and you can talk to your fellow artist by doing this the art or the artist might give your ideas or even inspire towards some new ideas of painting.
Being in the painting studio alone for hours may cause boredom most of the time boredom may result to art block the only way to overcome the art block is to go out and do something that you like apart from painting and upon return the art block may vanish.