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.
A watercolor mistake can be rectified using water spray.You can cover the rest of the painting using the masking tape this hence helps the painter to rub off the color.
Another method that you can use to overcome the mistakes is the use of this means that you can be able to correct the parts that were over painted.
Art block is normal to everyone you can be unique by the way you overcome it and emerge at the end of the block.
Taking the block positively is the best way to overcome it by doing this you can be able to come up with new ideas .
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.
The other thing you can do is call your friends to go to an event like hiking and come up with sketches that inspire you during the journey or even try sketching your surrounding this will help you get rid of the art block.
You can overcome art block by inviting your fellow artist to your studio and let him critique you by doing this he is helping you overcome your weakness and coming up with new ideas hence being able to overcome the art block.
Art exhibitions are also places where artist go to get there block removed this is easily done by seeing what other artists are drawing and being inspired by this helps you get into the mood of drawing you can also talk to the artist and he can give you new ideas.
Sometimes artist block may be due to boredom or just seeing the canvas for long you can just have a break and have a distraction like going swimming or playing football after some time you will be able to overcome the block.