Hope you all are doing good. As you know that many sellers (maybe new or not) are confused to choose any service or category for their gig or as their main skill.
Here i have few tips for all of you:
1- Never ever choose any skill in which you are not master/perfect
2- Only choose the skill in which you are expert
3- Never try to go for much more services provided by you
4-Choose one or two skills to be a top seller
Hope i am right and please let me know if i am wrong anywhere.
Thanks to @misscrystal for helping me.