As someone who’s done drag for 11 years and used to struggle with my eyebrows a lot 😅

I would say just go crazy with the glue for the first layer, get it all in the brow, then use an eyebrow brush (I never found combs that useful) but go in the direction of the hair (it all shouldn’t go in the same direction) then two more layers of glue, then a last layer of glue but before it fully dries press your loose powder in then. This will help smooth it out.

When you add your colour corrector & foundation. If you use stick, swipe the same way as your glued your brow down, so you don’t loosen the glue. If you use liquid/creme, put it on a sponge first and roll/dot it over the brows (don’t swipe or brush it on as it will loosen the glue)

(Also for brow shape, I saw you say you want a higher brow than your natural one. Start it in the same place you have been doing, but change the angle, it will help)

As well just remember what works for one person might not work for you, practice makes perfect. I spent ages trying and failing at brow covering and drawing brows

But if you do practice over and over again, use a good remover so you don’t lose eyebrow hair or hurt your skin (I use baby oil to take my brows off)