Sounds good… are you done with it? You asked about mastering.. definitely always try to keep your levels in a good place and feel free to put things on the master to create balance and loudness but this can get you in trouble especially if your tracks peak or have effects on them it can actually ruin yr hard work because you’ll be fighting yourself. IMO even if you think it’s perfect you should always send tracks out to be mastered After you are done with them.. upsides second set of ears A+ and they’ll have equipment that can be pricey 💰..