Can't add custom field and featurize the work

I am working on opigno and trying to add custom fields to lesson content type. I also added some filters in the views and tried to featurize the work. In the feature listing page (provided by feature module) I tried to create the feature so that I can push my local changes to dev environment but I didn't see all of my local changes in the feature list. So my question is How can we add custom field in any of the opigno content type ? How can we modify existing opigno views and transfer the changes from local to prod ?