I need some warm up exercises for my singing please!!

find a piano/keyboard, sit down (sit straight) then play keys and hit those notes. Start and middle C. then work your way up, and do each note over and over till آپ hit it perfectly. go as high as آپ can. then go back to middle c, and work your way down the same way. i used to only hit so high and so low, but now i can go 2 octaves above middle c and one and half ovtaves below :)also, this works your throat and helps your vocal coards remember the right notes to hit. hope this helps! :D