How do you keep your walkways to your gardens level?

I use stone or paver dust under the stones. It seems to keep the stones level more than just rocks or dirt.

Remove the pavers. Create an edge using string and stakes or a garden hose. Dig out sod and uneven spots with a flat shovel. The bed for your pavers should be about 8" deep. Add about 4" gravel and tamp it down (build your own using a 2X4 -- as the handle and a 1 ft square plywood for tamp). Add about 2" sand (don’t use just play sand. Use concrete sand, which is jagged and will lock into place to hold the pavers steady).

Spread out about 2" of sand over the walk area, then place two 1" pipes on either side of the paving area. Put a level across the pipes and add sand under the pipes until they are level. Using the pipes as rails, drag a board the length of the area. Remove the pipes, fill the indentations with sand and smooth with your hand.

Lay a row of your pavers. Run a string from one end to the other to keep the outside edge straight as you place the remaining pavers.

Here’s very important tip: don’t push the paver into the sand. Instead, take the brick and gently place it on top. Do that all the way down. That way you’ll ensure that your walkway will stay nice and level. And don’t worry when you see the gaps: you’ll be coming back with sand later to fill in those cracks.

After all your pavers have been laid, sweep sand into the cracks. You'll probably need to sweep more sand in the joints (or cracks) once or twice again after the first couple of rainstorms.