It's not enough just to know individual sounds in English. To have a natural accent, you need to get the word stress correct.
For example, the DEsert is where camels live. deSSERT is a sweet treat like cake or ice cream!
Can you hear the difference or can you pronounce the different? The word stress in English is usually on the first syllable, but there is no set rule. (I know, ESL learners hate to hear 'there's no set rule!)
Practise word stress in English with this activity: