I looked at your storefront, and I would be willing to bet that you forgot to add a markup for your products. Your little trident is only $5, and that is the base price for that material. You could sell a zillion of them and never get anything from Shapeways.
Go to the circle in the upper right that is your profile picture. Right click it, then go to My Products. That should put you on a page with a list of your products.
Click the Edit button under the first product. That should put you in a spot where you can edit what the customer will see. Across the top you will see
Selling
Details
Discoverability
Variants
Materials
Pricing
Customization
Images
Click on Pricing.
You'll see the materials you are selling the product in. The first price is the one that Shapeways charges to make the thing. The next is probably $0 because there is no markup. The last box has a spot to enter your selling price.
For example, you might see:
White Natural Versatile Plastic
Default Material
Cool trident thingie
$5.00
$0
$5.00
You want to change the last price to be more than $5. I always suggest ending in either .95 or .99 because it makes your storefront look professional. So let's say you want $0.95 for your hard work. Enter $5.95 in that last box.
Then you will see
White Natural Versatile Plastic
Default Material
Cool trident thingie
$5.00
$0.95
$5.95
Make sure you click on the red SAVE CHANGES button.
Then you have to get out and promote the heck out of your store. Share it on your page on Facebook. Check with admins of group pages to see if promoting your stuff is okay. To be successful, add to your shop at least once a month. Promote your new stuff each time. If you can get painted samples of your work, add the photos to the listing.
You have a great banner and a nice profile picture, as well as item descriptions, so you are off to a great start.
Good luck!
Jean