Identify the problem the increase needs to solve
Start by reviewing completed jobs. Has editing time grown? Have direct costs or overhead increased? Is the calendar full of work that leaves too little owner compensation? Are you adding a meaningful service or changing client focus? Different problems may require a price increase, tighter scope, a process improvement, or some combination.
Avoid choosing an arbitrary annual percentage simply because it sounds normal. Use your cost model and actual capacity to estimate the average booking value needed. Also inspect client fit and inquiry quality. A price change can support a better model, but cannot by itself create demand for an unclear offer.