This part is specifically designed for extending that time. First and the most important factors for a handstand is a straight line. A straight line makes you rigid as a plank so your body wobbles less and stays at the balance point. For a straight line, practice stacking by doing chest to wall handstands. This will give you a idea of what stacked position feels like. Next, do toe taps to get that same stacked feeling, just in freestanding. Now the final part is balance. You should not fight for balance. It should come naturally and you need to do just micro corrections. There should be no struggle for life. Do fingertip presses against wall and press handstand negatives to build that control. Use Grease The Groove for ultimately extending that upside down time.
The best solution to the problem is unilateral exercises. Do your set with a few reps in the tank with the weak side and then do the same number of reps for the stronger one.
I suppose you know the basics and can hold a handstand around 5 sec. This part is specifically designed for extending that time. First and the most important factors for a handstand is a straight line. A straight line makes you rigid as a plank so your body wobbles less and stays at the balance point. For a straight line, practice stacking by doing chest to wall handstands. This will give you a idea of what stacked position feels like. Next, do toe taps to get that same stacked feeling, just in freestanding. Now the final part is balance. You should not fight for balance. It should come naturally and you need to do just micro corrections. There should be no struggle for life. Do fingertip presses against wall and press handstand negatives to build that control. Use Grease The Groove for ultimately extending that upside down time.
I can't give you a exact workout to follow, though I can help you by giving the exercises. You gotta make the plan yourself according to your strength and energy levels. For handstand, practice wall handstands, hollow body holds, fingertip presses, heel pulls, toe taps, handstand press negatives against wall, and ultimately the freestanding handstand itself. For looks, prioritize the gym more than Calisthenics. Calisthenics builds strength at neuro-muscular level, though sometimes it won't build muscle muscle. Do high volume gym workouts for muscle and calisthenics for skills and strength.