Also, if you haven't had a chance, take a look at Gondwana Telescopes at this LINK. Alex has some wonderful dob designs and other items that are terrific and I recommend checking out. If you ATM you may get a few ideas or if your in the market for a scope, he may interest you (if your down under but you could contact him if your in the States I am sure).
New video from Alexander Massey on the Mellish Method of Sketching
If you haven't seen or viewed Alexander Massey's sketching tutorial on YouTube, you should do that ASAP. Alex gives a wonderful presentation and your able to watch as he demonastrates the techniques he uses to obtain such faboulous sketches. One thing I learned is I over think my sketching and need to think in more simple terms. Anyway, here is his video and check out his blog at email@example.com. Here is the LINK to his blog. Below is the video if you want to view it!