Congratulations, starting up your own business is a really big achievement.
Your next step is to make sure your new business will survive snd thrive. One way to do that is to consider
- what your minimum costs are, say monthly or weekly over a year. These are things that you need to pay regardless of how many clients you get, so to feed and house yourself, maybe get leaflets printed and to pay any tax due on your earnings and anything like insurance, too
- the most you could possibly earn, if you had all the clients you could manage. How many dogs could you possibly walk each week / month / year.
It's a good idea to make some allowance for yourself to have a break for holidays and incase you are not very well, so that you target less than that maximum possible.
Thinking ahead, do you know anyone who could do the walking for you if you get ill?
Then work out what your 'break even point' is to make your business viable over the long term by covering at least you minimum costs.
If you don't make at least those minimum costs, your business is not really viable longer term.
Think about whether people commit to using you to walk their dogs long term, regardless of weather and their own holidays. Does it make sense to charge more for one off walks compared to regular daily or weekly business?
Take a piece of paper, fold it down the middle. On one side, set out the minimum you need to earn, then your maximum possible and then set yourself a stretching but achievable target between those two point.
One the other side of the paper, set out your costs, basic plus any costs that depend on how many clients you get.
That piece of paper is now your business plan.
Each month, or maybe each quarter (three months) work out your actual income and actual costs and check how you are doing to your target.
You will see how your business is running, whether you need to expand / get more clients etc. very best of luck.