couldnt tell you how old yours is, nor could you get an age for your snake from seeing other peoples snakes (only the breeder or you can know that really), *roughly* when they start showing their bands, theyre around a year old
What i can tell you, if you are still feeding fuzzies or pinkies, you need to up that food size, 2nd pic look like it can take adult mice easily
mine was 9months when i started feeding adult mice