Quoting Thomas Z.
I'll have to disagree with Mithryl this time. The overal design is nice, however I think it's not as good as your Impulse was. Some parts that you should revise: The neck part, the whole head sticks out too much and looks too thin compared to the rest of the body, it just feel too off for me. Next one is the backpack, sometimes it's better to keep things simple and make a flat type backpack, because this one sticks out too much as well(Unless you're going to place wings on the sides or other equipment, if so, then it'll be more balanced). The chest looks very good, you only need to make that neck disappear, or place it lower somehow. The model has potential, you just need to make some changes on it.
I think I'll be taking a break from real brick gundams until I get more pieces, because I don't have the right pieces to make the best gundams I can, but I'll see if I can make the back and head better in the future.