You're at 5 weeks, and I'm assuming you're using long estered test with the deca, so the gear should just now be kicking in at peak stable levels. Make sure you train hard, but if you really want to maximize your progress, you'll couple the gear and training with a strong diet. From your pics, it looks like you've got a big frame, but carrying some bodyfat. While some people gain good muscle while losing fat, most of us aren't that lucky.
I would recommend a diet just slightly above maintenance calories. Normally that's about 15kcal/lb (of lean mass). If you weigh 200, and are 20% bodyfat, you've got 160lbs of lean mass for calorie calculations. Eat cleanly just above maintenance (maybe 17-18 kcal/lb of lean mass), at a macronutrient profile of about 40/30/30 of protein/carb/fat. Proteins such as lean beef, chicken, eggs, and fish. Carbs such as brown rice, sweet potatos, and fats such as almonds, avocado. A good extra meal source is protein shake with heavy whipping cream. You got nutrient dense protein with pure fat from the whipping cream without any simple sugars.
So many guys in the gym could take their physiques to a whole other level with smarter nutrition. On the cycle, drop all your alcohol. It's the equivalent of throwing down handfuls of M&Ms. Pure sugar dumped into the bloodstream. You want complex carbs that slowly elevate your blood glucose, and can get metabolized slowly. Go from 3 meals per day to 6 per day. Don't change the total number of calories much, just spread those calories over a longer time period in smaller amounts. Will keep the metabolic furnace stoked.
Good luck.