Translation requires mastery of both languages and it should never be a word for word translation. If you translate “ไปไหนมา / pbai nai maa” word for word into English, it will read “go where come” which does not make sense. Instead, you should translate the essence of the phrase which means “where have you come from".
Translation also requires you to think out of the box. In my above example, instead of being fixated with the word “ageing”, think of the properties of ageing skin. For example, an aging skin is likely to have wrinkles. An ageing skin might sag down as it loses its elasticity. Use those terms to express ageing skin instead.