Actually because it's a commercial site. I have to go a little (all be it slightly) more formal on this.
At that link there is a copyright agreement, I need to get that backed and signed.
And than the artwork emailed to me as well... that leaves a legal trail (so says the attorney). You can email to firstname.lastname@example.org
Then, you'll get a log in to my site which eventually will show sales and all that. The pages that has those details doesn't seem to work yet. I have a tech support guy looking into it. I'm also going to have Paypal Adaptive Payment system on my site, so you'll actually get paid automatically. I think that happens 5 days after a sale the system makes sure everything is clear and then pays you. I don't have to do anything except have money in my account, which if someone bought something... there is the money in the account. LOL...
I hope this doesn't lessen your enthusiasm. I do think your art and this fish in general have a market as cross stitch.
I personally might stitch it, but I'm working on a project now that I expect to take a the rest of the year to complete (my dragon project has an image in my gallery actually, it's about 80% done now, but that far has taken 2 years). Creating patterns takes between 30 minutes and 4 hours before I give up, but average about 1 hour.