I understand what your saying, but i've had no problem hitting the catchers glove whether it be inside or outside even with my off speed pitches.
At the level im playing at if you miss your spots, or throw a ball right down the middle its getting hit hard unless your fastball is overpowering, which mine isn't, so command is something that i have to rely heavily on.
I made this thread because of my lack of velocity, not because i had a lack of command and wanted to see if there were things that i could do within my mechanics to help me improve it. Lack of arm speed and a passive lower half were things that were mentioned on here and were also mentioned to me in the past by coaches and my dad.