Raise the back of your tongue and switch your voice on.
Release: glide quickly from the tight rounding into the vowel.
Feel your lips move on every one: wet, win, away.
✅ Check
Watch your lips in a mirror on "wet". They should start tightly rounded and then open. Then try "wood": you should still see a clear rounding movement before the vowel.
⚠️ Common trap
Do not weaken it before "oo" vowels. In "wood" or "would", the /w/ needs an EXTRA tight rounding first, then a release into the vowel. If you skip the movement, the /w/ disappears.