FREMANTLE'S Hayley Miller is fast becoming a fan favourite.

Although it's hard to miss her blur of long blonde hair from the stands, it's her footy that's making people pay attention.

Miller is fearless with ball in hand, lightning-fast and a leader on the field, traits that saw her selected with Fremantle's first pick in the 2016 NAB AFLW Draft.

She's also courageous. In 2016, she played almost an entire game with a broken leg, having been told she'd suffered a corkie.

The 22-year-old showed signs last year, playing mainly as a line-breaking defender, albeit with some skill deficiencies.

At season's end, Miller was told to tidy up her ball use and develop her leadership skills.

Two rounds into 2018, a move to the midfield – born of improved fitness – a clear frame of mind and a licence to thrill have aided her transformation into one of Fremantle's most damaging ball-carriers.

"I (used to play) a lot of games in my head [and ended up] overthinking everything ... whether I was going to play well or not," Miller said.

"Now I know it doesn't matter if I play well, it's that team aspect that's important.

"We're encouraged to play to our strengths and I see my strength as my run and carry.

"[Coach] Michelle [Cowan] is pretty happy for me to try and take the game on and create some options.

"Sometimes I'm probably a little bit too 'Go, go, go' and need to calm it down. That's something I'll work on – trying to find the balance between when to go and when not to."

Full of confidence on the back of its win over Collingwood, Fremantle faces the daunting task of confronting the undefeated Demons at Fremantle Oval on Sunday.

Melbourne has played aggressively this season and comfortably boasts the highest aggregate score in the competition.

The Dees have been buoyed by the stellar form of star midfielders Daisy Pearce and Karen Paxman, both of whom can expect attention from the Dockers.

"A challenge for us will be to really shut down that midfield run," Miller said.

"Their run through the midfield and their centre bounce taps are really clean.

"(We plan) to lock down those key midfielders. They really know how to use the footy, so if we can shut them down I think we'll be doing all right."