Ecommerce store, 1 month in report, ad help?

Hi all

I set up a shoe store on shopify and I am very happy with my first month. 22 orders, $160 average purchase, lots of traffic.

All powered by very basic insta ads targeting european countries, engaged shoppers and online shopping/ mens clothing.

I am very impressed as the store was incredibly basic on day 1. Bad photos, rushed copy etc. Its progressively gotten better and so have sales.

I am currently spending 35 a day. Happy to invest as the returns are good, i feel my targeting knoweledge is extremely basic and wd love to be pointed in the right direction to increase my ROI?

Any ideas wd be great!