Try Drop Sets, good for Muscle growth. You begin with a very heavy weight that you can perhaps only do 5 Reps, then drop the weight and go to exhaustion, drop for a third time again going to exhaustion.
If you keep doing the same routine over and over which it appears you are doing, your body will adapt and you will stop seeing results.
Try the Tripple Drop Sets for Arm Curls, Hammer Curls. Do same for Dumbbell Tricep Extensions also some Tricep Kickbacks. If you do Pull ups increase your weight by wearing a weighted belt.
The Press Ups you are doing are primarily working your Pecs as the Prime Mover and Triceps as the Secondary. As you are not increasing weight, you are running the risk of having a small chest with huge arms. What are you doing for your Shoulders, Back (apart from Pull ups) and Legs? You have to think about symmetry and balance when you are working out with a goal to increase Muscle size.