If you're a reasonable exponent of DIY, you might want to make some cosmetic improvements to your home. Just use a little caution with the bigger jobs, such as fixing up a bathroom.
These are the top 5 mistakes to look out for when upgrading a bathroom.
Pipes and waste
Don't disconnect water pipes and waste. This is a role for a qualified plumber. You risk damage to your home if water gushes out everywhere, and it likely will not be covered by insurance.
Unless you're an electrician, don't start playing with the wiring. Call in a qualified professional.
A tiler will usually undertake the waterproofing of a bathroom once tiles have been knocked off the walls and floor. If you don't do this task correctly then a water leak will cause no end of structural damage.
If you're doing this work because you're on a tight budget, don't start moving fittings and fixtures. This is an expensive exercise that should be undertaken by a professional plumber only. By all means install a new vanity or mirror, but leave the pipes in the same place.
More than one DIY enthusiast has thought that they'd connected the pipes to the tapware, sealed and tiled the wall and turned on the tap to find … nothing. Once again, call in a qualified plumber to make sure the job is done correctly.