Nice Mech design, and welcome I reallly like the overall silhouette and form of the model, tho some parts in the inside dont seem to fit together welll. For example, the panels in the front are really flat and sharp, whereas the panels on the lower protrude more and look more round. So you might redesign the front and keep the neck. Currently all the attention is drawn to the circular joint on the side of the neck since theres no focus point in the front, just smooth paneling. Inserting a hole for a camera or something like that there would give this a more interesting shape.
This is a vid I found recently, its just a preview for a commercial workshop for mech design, but the shown chapter is really good in terms of design I think.
Your work looks very promising, keep it up!