Use a soft and flowy brush.
Apply long brush strokes, verus short strokes
Light EVEN coats are better than heavy ones. Too much applied poly at once can create a foggy effect in your finish.
Not stirring your poly well can create a foggy finish.
Topcoat dries clear when mixed appropriately before use.
Store out of heat & cold.
Close lid tightly when not in use.
After you apply a light coat, don't continuously keep brushing back over it as it is setting up (this will create an uneven finish). Apply and keep moving forward.
You can do a light sand in between coats for a more professional finish.
Make sure your first coat is dried well & clear before you add your next coat.
Advanced Tip: Drop a little of your paint into your banana peel poly to tint it. (then when you put your strokes down, it blends nicely with your paint color)
Always stir your poly really well, with a stir stick to get it all combined. Reach the bottom with your stir stick. Don't use until ingredients are combined.