If you have a round face, then you should have hair longer than the chin and a bit longer on the neck to balance this style. Obviously, you'll need curls but if yours are in spiral be careful not to cut it too short
So if you intend to cut this curly bob hairstyle, remember to inform your hairstylist to keep the length at your cheekbones as curls retract at least an inch. Cutting individual curls will create some choppiness and avoid bulkiness.
This curly bob hairstyle already has shape, so you don't need tons of products. Trim every six weeks.