Beat Mastering

Hello! Im looking for an experienced producer/mixer to master a FL Studio file. Basically, I made my own beat and recorded vocals over it but its the first beat i ever made. Even though I feel i did good, when I listen, its clear to me that some of the track placements of the instruments on the playlist are slightly off beat. what I want, is for a professional to take a detailed look into the project file and use their skill to mix and master the instrumental sound/vocals to perfection, tweaking the sound placements to anything that sounds "off" as well as tweaking the volume to whats adequate. the vocals have no effects added, i want the vocals mastered to sound professional. whatever process to make that gives it that sonically rich sound, i would like done. reverb, equalizer, the whole nine i want it done and i dont know how to do it myself so im willing to pay.

basically, to summarize, i want sound placements of the instruments cprrected/tweaked if any of the placements on the playlist sound off-beat or off timing, the instrumental tweaked sonically to not overshadow the vocals but to be the perfect sound and pitch, and the sound and quality of the vocals tweaked as well for that professional finalized sound. i would appreciate the job well done. peace