Walking around behind the mower is the easy bit - if you don't get the quoting and business parameters right you're not going to be a happy camper and you're not going to make what you're worth.
I post this because I'm in that situation and I reckon it's a major hurdle for anyone without sales and/or small business experience wanting to establish a viable business.
So I've let some clients haggle me down on quotes that I shouldn't have and I've let others dictate cut frequency too much - the area where I live has been part of a wave of migration over the last 15 years from cultures that don't place a high value on a nice lawn and garden and won't pay a fair price for such services (just my observations - admins delete this post if you need to)
So it reached crunch point over the last week or so once summer growth hit Brisbane and I'm flogging myself through overgrown lawns for not enough $$$
so I changed my advertising to explicitly say "regular clients only - mowed every 2-3 weeks - booked in advance" - I was at the point where I didn't give a f@ck whether the phone rang or not - and I dropped many many old clients who wouldn't come on board.
And - surprise - surprise - I've already got 3 new lawns this week under the new terms - good quotes - 2-3 weekly cuts - you just have to set the ground rules - feels good.