Is ball of muscle like pain in trapezius related to tightness of jaw, tmj, and maloclussion. Also pressure behind eyes?

Trigger-point. Your describing a referred pain syndrome where myofascial trigger-point is the small ball of muscle in the trapezius that refers pain, tightness & pressure to other areas of the body. Myofascia is the sheath that covers muscle bundles when a bundle gets twisted (the ball) the nerve in the sheath sends impulses to other areas of the body. Treating this condition is by a myofascial therapist.
Nearly correct. You're really thinking. Temporal mandibular disorder (tmd or tmj), imo, caused by muscle spasm of masseter muscle uppermost within chronically tilted head (see driver's license pic for confirmation); causal of asymmetric jaw closing ; stress on same-sided tmj. Chronic head tilt causes superior trapezius on non-tilt side to become spastic ; hypertrophic supporting a 10 lb. Chronically tilted head.
Need eval. The key word in your description is "malocclusion, " the cause or main contributing factor to most temporo-mandibular pain dysfunction problems. Please see a qualified orthodontic specialist for initial evaluation.
TMJ. The head weighs about 10-14 pounds and is held upright by the muscles of the head and neck - including the trapezius, a forward head posture, which can be the result of a malocclusion can create muscle spasms. Muscles in spasm can create trigger points, in addition to constricting the nerves that pass through them thereby causing the pain you describe. Find a neuromuscularly (nm) trained dentist.
TMJ. All Symptoms could be related to a TMD. See TMJ expert. Any dentist can be a TMJ expert with the proper training and experience. Most commonly, oral surgeons, prosthodontists, and orofacial pain specialists. Ask your MD, your dentist and your dental society for referrals.
Referred pain. Tmj dysfunction and associated pain can be elicited from the trapezius and other cranial related muscles. Thorough exam and treatment plans very often include relief of muscle spasm and splinting.
Referred pain. It is certainly possible that pain in the trapezius may be related to tm joint dysfunction as it may be referred pain from the ligaments and/or muscles of the TMJ area. Would speak to an expert in tm joint who posssibly works with a physical therapist as a partner in their therapy.