>>9656469Get some brushes obviously. Get some paint. Go for acrylics since you are new and learning. Non toxic and usually water based. Easier to hand brush those. Get some masking tape or liquid. You dont have to fully paint every kit but putting in the extra work definitely will pay off.
>>9656469You can try mark softer. For stickers it is not the best solution no pun intended. You are probably better off with topcoats with stickers. Try not to use tweezers or if you do be very light closing them, they tend to leave the clear parts a little warped and allow lifting to start.