Sorry, that's the reason we call this feature "unsupported". We can help with recipe software issues, but this feature is for folks who know a little HTML -- we simply cannot make the economics work to do HTML training and/or customization and/or proofreading... Hope you understand that these limits on our service aren't trying to be mean, they're simply trying to help us keep our ultimate end-user pricing as low as possible.
But briefly, to do what you'd like, make sure you're closed out of BigOven. Then, you can run Notepad on your Windows PC, and open the recipetheme0.htm file -- it's just a text file. You can look for the line "Instructions", and place another couple line breaks (this is a line break, in html: <br/> ) after the word Instructions, then Save the file back to your PC.