i know that some of these tips are obvious, but i hope this is some help to others !!

• READ MEASUREMENTS - accurately measure yourself with some breathing room and double, triple check with the measurements online !! most websites have a disclaimer that their measurements are 2-3 cm off, so watch out for that too
• BE WARY ABOUT COLOR - some colors may appear more bright/dull in real life because of filters/pc screen differences, so don't set a definite expectation on what you think your item will look like
• SHOES - unless you are Absolutely Sure of you shoe/foot size, i dont recommend buying shoes online... because of different standards for size/ material of shoe/ overall comfort, you cant really tell what the shoe is going to feel like, and with some websites you cant refund, so be careful when buying shoes !!
• SHIPPING - shipping is obviously an extra cost, and to avoid spending a lot, i tend to do the cheapest shipping possible, trading the price for the length of time it takes to get to my house
• buy things you think you're going to actually wear(personal advice from me) or else you end up wasting money...