Everything is well designed and logically drawn however i think you should try use thiner led pencils or clutch pencils to draw that will improve the quality alot
Look at that its almost perfectly done "實力不怎樣" is not a word to describe it Except the leg I like all the parts that you designed. Another Advice for thepeson who start this Topic Gundams are the same as human their body is abt the siz of 2 head and the botom to leg is abt 5 and a half so if u base on that you might do it perfectly because at the moment the head looks too big there after the size have been shrinked 2 tips on drawin
*before you start set up the size
*stand back and look at your drawing everytime after you finish, you can easily pick problem out from that
*dont press too hard on the pencil when you are drawin especially using 3H above or B above pencil the best pencil to start with are usually H or HB pencil or else you will make smuges over the page which will blure the drawing making it uneasy to see
Howevere those are only my opinins you dont really have to follow the rules because that is how i have done it.