When your coming to a fence or a line find the line (or fence) as soon as you can and dont take your eyes off it until you have a straight line. Itll help you find your striding. Also doing lots of gridwork and counting your strides when doing flatwork
Count on the ground when ur cantering like 1,2 and repeat it till u stop
Place poles and line work helped me with striding
The best point to go in 2-point is when you have long lines or in when you need more rythm before riding to a jump.