so lets have a look :-
1. no red sleeving on yellow/blue conductors
2. too much copper exposed on switch terminals
3. conductors cut bit too short for my liking
4. no sign of any earth sleeving on 1st picture
5. no intermediate switch fitted
6. different makes of switches fitted so will look gash
The only point with any relevance is number 5. The rest are cosmetic, and don't affect the working of the circuit. I do agree that it's a bit of a rough job.