The 'Rock DJ' star assisted judge Gary Barlow in selecting Colton for the live final stages of the competition last year and has continued to keep in contact ever since.
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Speaking to The Sun, Colton revealed: "I send Robbie my lyrics and he tells me what he likes and what he doesn't like.
"One song - 'Beautiful Surprise' - he described as 'genius'. I couldn't ask for anyone better to help me. Hopefully I'll get to LA to see him in the summer."
Colton also confirmed that Barlow has booked him and fellow X Factor finalist Marcus Collins to perform at a Liverpool-based gig to celebrate the Queen's Diamond Jubilee later this year.
He added: "I love it - I'm so excited. It's the chance of a lifetime."
Colton first told Digital Spy about his plans to work with Williams last November, saying the former Take That star has "been really supportive".
> Robbie Williams: 'I will become world's greatest popstar'
Watch Craig Colton perform 'Jar Of Hearts' live on The X factor below:
