Issues with getting persistence project on Heroku

Editable blog--I used datamapper and sqllite as done in Sinatra Notes example. I am having issues getting this up on Heroku.

Also changes I'd like to make:
* I'm working on getting the blog posts in 2 columns.
* I'd like to be able to click anywhere on each blog post to edit, not just on the ID number.
* Trying to get the picture to be round, not square
Which means what?