Minute Cryptic

Our definition here is 'Maybe knock first?', and there are two tricks at play here. Firstly, 'maybe' (like 'perhaps', or 'say') flags that we should look for a category to which the rest of the definition belongs as an example. And secondly, 'first' almost appears like it's a selection indicator... in the definition... Lean into that! What might 'knock first' be an example of?

This clue's indicators are 'all over the place', after', and 'entry'. One of these is an anagram indicator guiding us to move the letters of a neighbouring word around, rearranging them. Another is a selection indicator naming the position of an important letter in neighbouring fodder. And 'after' is a repositioning indicator - we'll need to put what comes before it 'after' what follows.

This clue's fodder is 'Tinkle' and 'surprise'. We'll use these letters (or some of them) to construct our answer, as guided by the clue's indicator(s).