Hi Mumfz. This is an interesting puzzle, and I did solve it, but has quite a few setting issues.
A cryptic clue must have definition and wordplay. The definition is normally (but not always) at one end or other of the clue. The clue should have two possible readings - the simple reading, e.g. what the clue appears to say without analysis, and the cryptic reading, e.g. the hidden word within the clue. Every word in the clue should be useful to both readings. The solution to a cryptic clue should also be unique, meaning it can have only one possible answer.
I'm going to choose a few of the clues from this puzzle at random and discuss how they do or don't follow the rules of cryptic clue setting.
13a: My popcorn tastes alcoholic without you - bitter.
So this is taking "my popcorn tastes" to mean "butter", and removing u ("without you") to end up with "bitter", which is a type of alcohol. So the definition is in the middle of the clue, great misdirection.
However, "bitter" and "alcoholic" aren't synonyms. Adding alcohol actually makes a drink taste sweeter, so you can't say that if a drink is alcoholic it's bitter either. So that's close but not quite there.
Additionally, "My popcorn tastes" isn't synonymous with "butter". It might work with "My popcorn's taste".
Finally, although I know we're taking the u out of butter, there's nothing in the clue telling me to add an i in it's place to get bitter. That's essential, because the wordplay currently gives the answer "btter". Maybe consider a letter swapping type of clue instead of letter deletion?
My popcorn's taste is alcohol, when I turn from you. (6) would use many of the same elements, but functions better cryptically.
11d: Doubly nothing in the middle of this person's head - loon.
There's a good bit of wordplay there letting me know the middle two letters are "oo", but where is the wordplay indicating "l" and "n"?
I think the entire clue is intended to be the definition - nothing inside this person's head, they're a loon. But we need
to also have wordplay to get to "loon" As it is, there's no way to figure it out without the crossing letters.
Doubly nothing in the middle of empty lemon-head? (4) might work better, as it gives the l and n, and still has the whole clue functioning as the definition.
Overall, I think this is a start, but it could definitely do with some work.