Hi, there! We should probably come up with a more formal FAQ for this, but here's a nutshell-version of our submission process, to get you started.
First, you need to be either an Author or a Seller. If you aren't one of these, or don't know what these are, then please click your image on the upper-right of Storylark.ph, then click "Settings," then click "Upgrade Account." (Or, you can just click this link.) You can set up the appropriate account upgrades from there.
Once that's settled, click on "My Titles" in your main toolbar, then "Add New Title". That should get you going. Note that we'll need a small amount of time to check your work for copyright violations and other legal bits.