Nobody shops for an electrician the way they shop for a painter. The question in their head is not "is this nice work" but "is this person going to burn my house down".
Put the licence number where it cannot be missed
Licence or registration number, insurance, and the areas you cover belong in the header or the first screen, not buried in a footer. It is the single fastest trust signal you have and it costs you nothing.
Separate emergency work from planned work
A tripped panel at night and a kitchen rewire in three weeks are two different buyers. Give each one its own page and its own action: call now for the first, request a quote for the second.
Show the work, not stock photos
Six photos of your own panels, your own conduit runs, your own van is worth more than any gallery of purchased images. People can tell the difference and they assume the worst when they spot stock.
Say what you will not do
Naming your limits reads as honesty, not weakness. "We do residential and small commercial, not industrial" filters out the calls that waste your afternoon and makes the rest trust the quote.