When sliding, push one foot to the rear side until it is straight and naturally leaves the ground. Keep your front legs bent and straight, and always keep in line with the front feet, so that your center of gravity is in front and you can keep your balance. When the hind leg is straight, retract and alternate the other foot.
Mastering the above posture, you can accelerate as long as you push hard.
Keep the correct posture and balance after accelerating so as not to fall. Remember to wear protective gear just in case. Also pay attention to any special circumstances ahead and avoid them urgently. Almost.