[link] "I've got accounts else wear" I think you mean 'elsewhere'
On the Mailing List, "Email Address" is really dark against dark; you could make it lighter, or even remove it, or put it as default value for the input box (you know, so that it disappears when you click and start to write it)
On the 'commissions' page; ***Please note that the prices stated here are only estimations! They may change based on what your project is! I will give you an exact price and payment schedule once you tell me what you want to commission!*** has too many exclamation marks I think
On the contact page, one of the lines says only "email" - I know that is for me to fill in my email adress, but I don't think that will be clear to everyone, as an 'email' is the message. You could replace it with "your email adress" or so
Something that I think is a bit more important; I think the commissions procedure is too complicated - on the commissions page you say, "go to the contact page and include this bunch of info", and on the contact page there is simply the text box. So I keep having to go back and forward between the two, and due to the nature of the site you don't allow us to open one in a new tab (or I found no way to do so). So I suggest you either; make them one page make a separate commission contact form somehow include the vital part of one page on the other too