Touch the tip or front edge of your tongue to the roof of your mouth just behind your teeth. Keep your jaw relaxed. Stop the air, then release with a puff.

Americans pronounce tower as TOW-er (/ˈtaʊər/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The tall tower tilted towards the town".
Record yourself saying "tower" and play it back. The mic stays on your device — nothing's uploaded.
2 syllables, 3 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
The textbook way isn't wrong — it's just not how anyone actually says it.
Stress falls on the first syllable, not the others. Stretch TOW — keep everything else short and quick.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.