I have patch a couple of places at the base of my shower with silicone rubber sealant using a caulking gun and it's worked well and water no longer escapes from the shower. However, where I have done the patching it is lumpy but where the original sealant is there is a smooth continuous finish.
1. Can the existing lumpiness (now dry) be made to look smooth?
2. What should I have done to make the finish look smooth and professional?