This is a praxctice assignment I have to do in Scratch but Idon't know where to start.

Timer 1. Create a variable called timer. 2. When the green flagis clicked, initialize the timer to 10. 3. Continually, wait 1second and check if the timer=0 a. Output the current time b. The timer=0 make either the background or a huge sprite say “time’sup!” 4. When the flag is clicked, everything should start over. 5.Be as creative as you would like with how your program looks. 6.Make sure your timer stops at 0 and does not continue into thenegative numbers.