np! Load up the journal on your account like you're going to install it yourself. When you have everything looking like you want it go to the options tab. Once you've clicked the options tab go to the bottom of the screen and there will be a button that says "How To..." Click that and it will give you a bunch of code. Copy that code, create a new text document somewhere on your computer, and paste that code into it.
Once you've done all that go to submit a deviation. Submit the deviation to DeviantArt Related --> DeviantArt Skins --> Journal . When you pick the file to upload use that txt document that you created. You will also need a preview image of your journal. When you've finished the submission process dA will say that the deviation is incomplete until you upload the images used in the skin. It will show you a window with a list of the images. Go ahead and click on the slots and upload the images you used to create the skin. When they are all uploaded dA will finalize the journal and you're done!
If you have any questions shoot me another message and I'll try my best to help out!