Hi isilra, glad you`re happy with it..it`s a big step for most people. Have you got any glue handy? If so, you can smear a little glue onto your tape before applying it to your system....just a tiny amount on a finger-tip..this will dull the ` shine` you are seeing...you might want to order Walker no-shine tape [ I use it all the time] as it`s great for non-visibility and gives a good strong hold too.
Your main issue from here on in will be fighting dryness...don`t shampoo frequently if you can avoid it and use a good leave-in conditioner daily or every two days..spritz the hair daily with water.... frequent shampooing lifts the colour and contributes to dryness...system hair gets no natural oils from the scalp,so you need to provide moisture/lubricant manually.
I`m always ranting-on about ``PPI Enhance`` leave-in conditioner [Google it] .....it`s all I use on an on-going basis, and occasionally a little Brylcreem [original]... when shampooing, use a system-friendly / specific shampoo and conditioner, and you should have few problems.
You might like to apply knot-sealer to your knots [ only barely dab it on..DON`T wet the lace with it] which can help prevent knots becoming untied and hair shedding early.
As amstat said, you might find glue easier to work with for the front,especially due to the curve/shape of the perimeter there.