Your set up looks pretty good, but I can't tell what kind of bulb is in your light fixture. It needs to be fluorescent, not incandescent. Incandescent (traditional) bulbs give off so much heat, you can't get them as close to your plants as they need to be or the heat will burn the plants up. They make compact fluorescent bulbs to fit fixtures like that, though it will probably be less light. The light needs to be just 2-4 inches above the plants, hung so it can be raised as the plants grow.
Do you have a heat source? Most of that stuff germinates better at soil temperatures around 75-80 degrees F. The soil temperature is a lot more important than the air temperature, so heat mats work well to elevate the soil temperature above ambient.
In general, the perennials are slower to germinate than annuals and take some patience and maintaining appropriate conditions for a long time. All these perennial herbs you are trying to grow are much more challenging from seed than things like lettuce, tomatoes, peppers. The impatiens, sage, oregano, lavender need light to germinate. So do not cover the seeds, just lightly press on them to make sure they are in contact with the soil. Rosemary seed benefits from being soaked for a couple hours before planting. Rosemary, sage, oregano, and lavender can take up to a month to sprout. This is an issue, because without perfect conditions for all that time, they can either dry out if they aren't kept moist or rot out from too much moisture. I bottom water all my seeds, putting a little water in the bottom of the trays. However, all the seeds that need light and are just sitting on the surface, I also lightly
sprinkle with water from the top to be sure they don't dry out. But it is possible, I have started all these things from seed in the past. I have lavender seed planted again this year.
I think you have done well at getting the timing right of when to start things. Best Wishes and keep us posted how it is all going.