Welcome. congrats on your successes to this point. It just keeps getting better.

No need to be cutting your face while learning but I certainly did it.
Read GSSixgun posting about beginner tips for May.
Seriously consider having him or someone of his talent level hone your razor.

Thumbnails will degrade a razor edge but you probably found the culprit. If the "bump" is a chip it can be corrected on the hone. If you are shaving at 30 degrees it might just be a contributing factor to cutting yourself. The best angle to use is the lowest angle which will cleanly smoothly remove whiskers 30 degrees is steep enough to indicate the razor could use some sharpening attention.