Below Curl request worked perfect to me,

curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "createrawtransaction", "params": [**[**{\"txid\":\"myid\",\"vout\":0}**]**, **[**{\"address\":0.01}**]**] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/

Without **Double quote (")** inside the "params".