A bit of backround: We have been using Shopify for around three months, and have come up against pretty much everything that might cause difficulty to new shop owners. Hopefully this will be useful to some of you who are getting started. For the more established - if you know of better ways to do any of this - please let us know!
In short, you will be able to learn something from our journey.. even if it is what not to do!
Despite all of the above, plus a generous Adwords spend; we have a terrifyingly low conversion rate - 0.39%
Hey really great job on your site I really like your logo and the color scheme I think it just looks really awesome. I do have some point of feedback that I think may help you.
I think you should add reviews on your website if you don't have any reviews people may go to a different website to search for reviews for your products and then they may leave your site and never come back. you should make it as easy as possible for your customer to buy and then includes having reviews and detailed descriptions I've noticed that a lot of your products don't have any description at all so if there isn't a description or any reviews I'm definitely not going to buy it.
Also since you are a brand new store that I haven't bought anything from before I want to know that you are trustworthy so I would consider adding some trust badges to your store.
Also on your product page I noticed that there isn't an always visible buy button. The buy button is the most important button on your website and you should make sure that it's always within a thumbs reach for your customer.
Take a look at the screenshot below and imagine that you are a customer ready to buy especially on mobile. Once you get through your description you would have to scroll alllll theee wayy back up... (see what I did there?) just click on the buy button so that you could buy. That is making things much harder than they need to be for your customer, which could hurt conversions. I actually make an app that can help with that. https://apps.shopify.com/better-sticky-checkout-button-increase-your-sales
Also have you ever considered adding an FAQ to your site. One question that I was actually curious about is what does a 12in balloon actually mean. Does 12in mean that it's going to be inflated to 12in in diameter once I blow it up or does that mean that it will have a circumference of 12 in or does that mean that it is 12 in when it's deflated? something like that would be really interesting and useful to know about. I think that you could consider having an FAQ or you could even consider having a Blog which I think would help Drive some more organic traffic to your store and could help with SEO.
But honestly I think your looks really really good. I think with a few minor tweaks you will be really successful.