Skating position: Get Low, Try for a 90 degree knee bend. Over longer distances, you won’t be able to maintain this, but bend ’em as much as you can.
Keep your weight over each leg. Push through the center of the frames. As an exercise, think about pushing through the heels at the end of the stroke. Make all your wheels leave the floor at the same time.
Push to the side, not to the back. Push as laterally as you can. Your foot will go to the back a little bit, but if you think “push straight to the side” you’ll end up with a more efficient push. (video credit to, U.S speed skating)