Touch the front of your tongue to the roof of your mouth, then release into a 'sh' position. Flare your lips.

Americans pronounce chew as CHOO (/tʃu/). You'll hear it in sentences like "The nature of the creature is to chew".
Record yourself saying "chew" and play it back. The mic stays on your device — nothing's uploaded.
1 syllable, 2 sounds. Explore each sound's mouth shape and how it's made.