I think the SNP needs to spend more time governing Scotland properly and less time fannying about with flags, writing signs in Gaelic, and generally blaming Westminster for everything.
Saying that it is undemocratic that Scotland is leaving Europe is utter nonsense. We voted as one country (the UK) and a reasonable number of Scots voted Leave (around 30-35% if I remember correctly).
I have never, and will never vote SNP, and yet have had to put up with them in power for over a decade. In fact at the last general election they only got 45% of the vote share.
Scotland leaving the UK and rejoining Europe would be no simple process either. As Scotland is currently running with an 8% deficit (SNP's own figures), it wouldn't even be allowed back in the door.