Looks like he ate, congratulations! Totally agree that the first time is the hardest, and you actually got luckier than me - my girl was so shy it took her almost a month to eat for me, but now she's practically a garbage disposal. Very pleased for you, I know that must be a huge relief.
Don't worry about not seeing a lump, I really only notice one right after my girl's eaten. Unless you fed him something quite large for him I wouldn't be concerned.
(Also, wow, he's a beautiful snake!)