I always found you to be one of the most obviously inspired individuals. You've got fun/ny ideas and clear influence from your environment or at least the environment you're most fluent with.
You've got a "grungy cleanliness" to your work. It's not 100% refined, but it's charming and works well with the atmosphere you present. It's a rare trait that many (me included) can't really incorporate and feel looks unprofessional when we try. Works more for you since it's subtle.
There's also some nice consistency in the back menu. The restaurant seems to have it's own theme and it's very adorably drawn.
The one thing I could suggest improving is your shadows. It is clear that you enjoy cartoony minimal shading most of the time, but a few hard shadows in specific areas will help create some depth and form while keeping it simple at the same time. Nothing fancy, but certain things like a drop shadow under Sam's arm, the condiments, and the box of fries. Little touches to define spacial relationships. There's a lot of...floating going on at the table. But it's nice that certain things are behind and underneath so that's also a step in the right direction.
I would touch on anatomy, but as I said, you enjoy a cartoony appeal so it's not too big an issue with this one in particular.
I really like this alphabet project you've got going. I really hope more people learn to appreciate your other ideas like this as well as your pin-up material.