Log in with your account (it's EVE's own site, so don't worry).
Use a custom key with access to the WalletJournal (I will not and do not store any information regarding this). You can click this link to create the key if you don't have one yet. The name of the key does not matter.
Mind you that character name is case sensitive, and that wallet-data is cached at the API-server for half an hour. This to not overload the API-server.
Once you view your wallet succesfully, you can copy the link and make a bookmark, should you wish to see it again (and skip this page).
If you are to share your link, do not worry, all that someone can do with it is view your wallet journal (as much as the key permits).