Use my shoulder routine!
Push presses: 3 x 4-8 (heavy) 1 x 15-20 (moderate)
Seated Cheat laterals: 1 x 6-12 (heavy for laterals)
{Then maybe do cable laterals: 1 x 10-12 drop set 6-8}
Every 4th week do seated dumbell presses for 4 x 8-12 reps, instead of the push presses
Your seated dumbell press will be stronger every time for sure!
Your shoulders will grow thick and dense and look really powerfull in no time.