glad to hear that you can see an increase during your first month.
Remember advertise, advertise, and advertise.
There are many ways to advertise without having to lay out a large amount of money.
example: make up small samples of various soaps, attache a business card and send someone (if you can't get someone to watch your store) or go on a day that you are close, if you do have a closed day and go to near by shopping malls, wall around and offer free samples to folks. If you have several different (5 - 7 types of soap) sample allow the people to choose their sample.
Display your samples on a very nice silver serving tray. You might even offer some type of deal on the back of your business card that has an expiration date so that they would need to get into the shop within the next few weeks.
One thing that also did good for me was I had a birthday registration. So when someone came in I asked if they wanted to register as they would receive (in your case soap) a free bar of soap on their birthday. This also builds a list for you to send notices out about events or new products that you have made and that are now available for sale.
Keep us posted.
I think your timing to open before the upcoming holiday season is very good and wish you the best.