What things make a shoe store front look attractive?

I would say it depends on your intended audience.

In general, a well-organized arrangement of shoes is necessary to demonstrate the store's strengths. There should be some sort of theme--a color, a season, or a style--that appeals to the buyer. Any discounts should be conveyed through a large sign in the background ("15% off all Nike") to further give the buyer a reason to walk in. The display should not be so "busy" as to confuse the buyer, but should not be too "desolate" as to fail to catch the buyer's eye. Also, the stores name and logo should be clearly visible--people like to know who they are buying from.

Now, to the part that depends on your audience.

If you are trying to sell shoes to 7 year old girls, colors and sparkles are helpful.

If you are trying to sell shoes to middle aged businessmen, the display should have a clean-cut, black-and-white aesthetic.

If you are trying to sell shoes to rich, young women, the display should have a sophisticated vibe.

And that is my opinion of the perfect shoe store front! Now I sorta want to open a shoe store...

Hope this helped!