This canvas art is a still taken from Avengers: Age of Ultron. It shows the main two Avengers and the main villain.
Tony Star AKA Iron Man is displayed on to left of the third and fourth frames with his repulsor blasters loaded up to fire. Steve Rogers AKA Captain America is also shown on the right corner suited up holding his shield. Ultron, the big bad is in the middle of the Avengers looking like a real bad ass. The background displays Ultron’s followers trying to rise up and attack and some other robots are also displayed at the back looking to get some action on against the Avengers.