The work should make its own invitation instead of requiring an apology before anyone sees it.

Prefacing your work with what is wrong with it changes what people are looking at. Say it is rough, unfinished, not your best, and you have handed the audience a lens; now they are hunting for the flaws you named instead of meeting the thing itself. The apology usually comes from fear rather than accuracy, and it protects you at the cost of the work.

Show the next piece with no disclaimer at all and see what happens. If context is needed, give the practical kind: what it is for, what feedback would help. Let people react before you tell them how.