Promote Your Online Store
The biggest problem in making an online store successful is getting traffic to it.
In order to make money with your online store, you will obviously need traffic. Here is where many people struggle, they just can't figure out how to get enough traffic to their online stores.
The bigger the number of visitors on your online store, the bigger the chances that your products are being sold, so that you can make the profit you expect.
In order to promote your online store, you can go to forums and message boards related to the category of products you sell.
For example, if you sell "paintings", go to a forum about Art and Craft, write some comments there and place a link to your online store in your signature. This way you will get in contact with persons interested in this topic, so, in the things you sell.
Note: some forums and message boards only allow you to add a signature to your profile after you post a few comments.
Also, you can go to Articlesbase.com, write an article about, let's say "paintings" (if you sell paintings, of course :) and place a link to your online store.
People that read your article (obviously, people interested in this topic will read your article) may want to buy something from your online store.
If you have money to spend, a good way of promoting your online store would be Google AdWords.
Also, you have to make sure your site is optimized for search engines.
A high rank in search engine results will bring a lot more traffic to your online store.
If you are interested in SEO (Search Engine Optimization), read my article Improve Your Site's Rank in Search Engines.