Bodywriting you say, sure.
You will need two markers, washable one for visible places and permanent one for hidden places(not seen when you're clothed). Unless I specify exact spot, you're free to write wherever on your body or body part mentioned. Finally it's up to you to decide if you can hide writing in that place or not and in which case what marker will be used. The only rule is that you will need to have at leat 20 writings done with permanent marker. Yes, it will be a long list, but you'll do it for the orgasm, right?
Disclaimer: There might be drawings too and you still should use a proper marker depending on the place, but drawings doesn't count towards 20 writings. if you need to draw, I'll start a line with "draw". I will leave some writings and drawing as "wherever you want", but feel free to use your back if someone else can write on you.
1)WHORE on face with mouht as letter "O"
2)SLUT on forehead
3)Draw 6 hearts on your face
4)Draw an arrow below your mouth
5)PUT DICK HERE under the arrow on your neck
6)SLAP ME on ass cheek
7)SPANK ME on the other ass cheek
8)USE inside one hand
9)ME inside the other hand
10)CUM DUMPSTER on chest
11)TOILET on chest
12)TRASH on belly
13)I LOVE SUCKING COCKS on leg
14)I LOVE LICKING PUSSIES on the other leg
15)I WILL BEG on arm
16)SPIT ON ME on arm
17)BULL'S ENTRY over your pussy
18)DESTROY ME on chest
19)FLICK IT next to your nipple
20)TWIST IT next to the other nipple
21)TOY on face
22)Draw dick on the back of your hand poining to the other hand
23)Draw sperm droplets on the other hand
24)FUCK, SWALLOW, SLEEP, REPEAT on leg
25)BREAK MY LIMITS on chest
26)SLIP INSIDE next to your pussy, each word on the other side of it
27)FREE USE on arm
28)PLAYTHING on belly
29)DIGNITY wherever you want, but in hidden place
30)I AM YOURS wherever you want
31)ANAL QUEEN on arm
32)Draw 3 stars in different places
33)SUCK THEM over your breasts
34)LICK THEM under your breasts
35)WORTHLESS wherever you want
36)SNIFF under foot sole
37)BITE under the other foot sole
38)MAKE ME CRY on upper body
39)GOON MASTER wherever you want, but in hidden place
40)BALL SMASHER on arm near your hand
41)Draw an arrow pointing from #40 to your hand
42)CLAIM IT on your ass
43)HUMAN CANVAS wherever you want
44)HERE TO SERVE wherever you want, but in visible place
45)Draw fake piercing going through one of your nipples
46)USELESS wherever you want
47)MADE TO KNEEL on each leg
48)MADE TO BENT on your ass
49)SLAVE written around your wrist like a shackle from a handcuff
50)OWNED BY MrMeanie wherever you owner wants
Now for the fun part, when we exclude 7 lines of drawing, we are left with 43 lines of writing of which at least 20 has to be made in hidden places with permanent marker. It's up to you to decide what to write in smaller or bigger print to have a space for everything, you can get your owner to help. You need to spend at least 1 hour naked with everything and you're not allowed to remove the permanent marker even when the hour is up - it has to fade naturally. Only after all of the hidden bodywriting is gone on its own(typically 2 to 3 days), my permission will be granted.
Also, I do not see pictures and videos as a limit of yours, so if that's fine, I'd like to receive a picture from the front, from the back and a video of you doing a 360 showing all of your writings.
PS I know that it says that tasks will be valid only for a day, but I still hope you will go through with it fully and keep the writings until they fade on their own. But if you decide to wash it off after a day, then that's fine, but it won't grant you the automated permission. In this case write me a message and I'll give you a short and small task to do for redemption and receiving the permission.
.. etc), edging, beatings (pussy or breasts), telling me to watch certain porn (either once or exclusively for a limited time), edging to certain porn.. 
