It appears your blog is fairly new, so organization and the layout takes a bit of time to build up, when you have more to offer. What I like is you have the updates box, as well as your newest themes. Always a great thing to have (even if I don't always have it myself).
I would definitely organize your links page. Perhaps when you have more to offer, but I would still start early before it's too overwhelming. Have a blog section, to link to credits and theme questions. Resources section, link to all resources, and then the ones you have to offer so far. I would also link to all tutorials and the ones you have posted. It's always very helpful. This kind of stuff just makes everything neater and easier to manage. I would also link to all of your themes, even if they're off to the side. A lot of people like to like the theme and/or reblog them for future reference. (It also gets you more attention when theme/resource blogs can reblog you!)
I would also make a FAQ, for the questions more often asked. Since you're new, you may not have many right now, but this is a reminder for the future.
I could be blind, but if you have next/previous buttons, I cannot find them. So going through your blog is incredibly difficult. If you have infinite scrolling, it isn't working for me. Infinite scroll typically doesn't work with your type of design.
Appearance & Color Scheme
Your design is definitely original. It's always a great thing to have an original design for your theme blog, because your theme blog's design is a person's first impression. I do like the colors, but I would definitely make the text bigger for your posts, if not anything else. A lot of people have bad eyes, and might find it difficult to read such tiny font. Posts are the most important part of a theme blog, so they need to be simple for people.
Your design is large, and keep in mind that a lot of people have smaller themes than the average desktop screen, or even a larger laptop. If something is squished, people might find it difficult to navigate and find anything. And I come back to next/previous buttons, and infinite scrolling. Theme blogs are okay with infinite scrolling, but should better stick to pagination for easier browsing. If you're not using infinite scrolling, as I said, finding those buttons is very hard.
Also, at first I couldn't find the scrollbars and I was stumped on how to review you when I couldn't view anything. It took using Firefox to find them. So I would suggest putting somewhere on the blog where they are, or in the future, try to use more obvious ones. I thought the wood pattern was just part of the design.
I mean absolutely no offense, but your themes look fairly similar to a lot of themes that I have seen. Yes, I know very well it's hard to make stuff that looks different when there are so many themes available, so it's good they don't look exactly like the ones I've seen, but I would try branching out a little bit and experimenting. Your theme blog is original, make something original like that.
A lot of your themes have hover descriptions, and while I love them, most people like to have their description static, so people can see it right when they visit. You don't include that option for any of them, so I would suggest considering it.
For your Khaleesi theme, I don't see a main navigation at all, and according to your code, you don't include a way to add the links, unless you go into the theme manually. While you may think it's not that difficult, believe me, a lot of people on Tumblr have issues with just changing a font under an obvious DIV name.
Just remember to always think about the people that'll be using your themes when you make them, what they would like to have the option for.
I don't have much to say on this section, because you're a new blog and don't have that much at the moment. I would only suggest to post a larger range of resources. But more than likely you will in time, without my say.
The blog is new, and I don't particularly have anything to say besides what I have told you to consider. So there's no personal complaints or comments I can think of. I do wish you luck on your journey to becoming yet another huge theme maker, and I hope that I somehow help you.
