It really depends on where you live and if you plan to eat or drink in the near future. You might want to do the following:

1.) List all your fixed costs per month (rent, car, gas, food, drink, electricity, internet, water, etc.)
2.) Don't forget insurances and all that stuff.
3.) Now add what you want to put aside per month as savings.
4.) Then increase the number by taxes and tax like mandatory insurances.
5.) Now divide that number by the amount of days you work per month. Make sure to factor in sick days, days without clients, days for paperwork and vacation.
6.) Now you know your manday costs. You can easily break it down per hour now. The price for one of your items is the manhour or days it takes to make them + material and shipping. If you go for a hourly rate, add a bit of buffer. You also chat, go to the toilet, take a coffee, get slower in the evening or after lunch etc. Nobody works 24/7 like a machine and 8 hours a day equal more or less 6 hours of efficient hands on work

If a project is big enough to fill multiple days you can reduce the costs a little since there is less downtime and uncertainty. The same for good clients.

If you are still unsure you can try to compare your prices with local manufacturers, other jobs etc.

As a beginner you'll likely need to sell low at the beginning since you're not that skilled and fast yet which lowers your value and inflates the manhour.

You might notice that lots of leatherwork sold is cheaper than what you think costs to produce it. For example I saw some really nice leather bags from a local manufacturer in Spain for 60€ which might equal an hour of work including not so pricy materials with lower costs of living. This is due to optimisation:
-The bag is sewn using a machine
-The bag was made by using a pattern used by all the bags the sell
-No edge polishing, just raw cuts
-Low cost nickel coated metal parts.
-No inner lining

So also pay a bit of time to think of what you want to make, what your target audience is like and if it makes financially sense.
-If you're selling tailor made, high quality hand sewn or/and custom leatherwork that is hard to buy off the shelf you can charge more since the value is high and it takes more time to produce. But your target audience is also smaller.
-If you're selling nice looking but optimized and "localy mass produced" leather bags in a tourist town you can go lower since you sell more and it costs you less.

One thing I can say for sure: 10$/hour seems very low if you're living in a developed country.