Well the best way to do this would be to go to steemnow.com, or to make things easy for your self just follow these instructions;

1. Just go to steemnow.com/@*****, then put your username where I put asterisk.

2. Scroll down to the bottom of the page where you see 'latest posts'

3. Click on the place that says 'my posts'

4. A pop up menu will appear which will show you some options to choose from, click on 'my comments'

5. Once you do that, give it a minute and all the comments you've made which haven't paid out will show up, and the total will be displayed at the bottom. This is because all your posts on musing are actually comments on @musing-thread post.

Take note, if you click on the post to blog box for any answer then it will appear on the list for 'my posts'. This only works for posts that haven't paid out.

I hope this helps.