epub Cover in iBooks

[holdrio]

hi,
i produce/export an ebub-File in Indesign CS4.

Everything works fine, but i don`t see on the left site
in iBooks content view the cover of my book, instead the default
brown cover.

I want my cover on the left side like in Winnie the Pooh:

How can i fix this? maybe i can add the cover in the publishing process on iTunes?

Thx for help.

king regards
holdrio

 

[yu12]

I use INdesign to export epub, and use Sigil to do further format, you can set cover in Sigil.