Insert the valve stem into the wheel with the stem pointed away from forward rotation.

Verify your valve stem is angled as shown in the photo. If the stem is on top, it should point to the right.

Work one of the beads entirely onto the wheel.

Inspect that the tube is not caught between the installed tire bead and the wheel rim.

Work the tube entirely into the wheel rim so that installing the second tire bead will not damage the tube

Work the second tire bead over the wheel rim.

Inspect that the tube is not twisted, and is not caught between the tire and rim, and the valve stem is centered in the hole of the wheel