Welcome to the forum first of all.
Question for you. What angle is it now and where is it located on your body?
Most holster are zero degree cant (angle) or a FBI cant (15 degrees) forward. I have some that are zero straight up and down or FBI depending on type and where it is located.
I use a couple different holster makers myself. Bianchi and Highnoon Holsters. Most of my OWB holsters are Bianchi with a 15 degree forward cant and half of my IWB Highnoon holsters are zero or FBI.
If you holster is behind the hip, you can have a harder time grabbing the gun due to it is further behind. I generally carry from 2 to 4 o'clock postions on the strong side.
Hope this helps.