The bricks are rather made well. I would say next time go back and clean up the edges of the blue window. Don't be afraid to say grab a ruler and paint over it to get a straight line. Once the bottom layer is dry, it's okay to go back and make some edits. I will say only do this if you have normal paint and not "student" paint. Normal paint will be more solid while student paint show a lot of color under it since it's cheap paint meant for students to experiment and easier to buy. Stay away from loft artist brands and anything with the word student on it.