I just took a quick look around your page and it looks good. The layout is simple, but very clean (as you said you didn't want it to look to busy), navigation is simple and the menus are clearly labeled. There are some problems with overlapping areas, but that is already noted on your site as a browser issue.
I do have 2 suggestions though.
If you're trying to promote your supplies store, you should have that be more of a highlight of your website. Let everyone know why they want to purchase stuff from
your store.
The menus in the store are only a tiny bit confusing. When you click on a section, it disappears from the menu area (Vine items, wood toys, etc.). It didn't take me long to realize what was going on but it makes navigation a bit clunky to have the menu change between such closely related pages. I see what you were doing though.
(I hope I'm not sounding like I'm being to nit-picky. I'm making a website myself and am just trying to give you helpful feedback, which is what
I will be looking for soon
)
All-in-all you have a very nice website. I wish you luck with your store, especially if you've already invested a lot into it.