Growing your bitcoins can be done easily with some signature campaigns because its easy and also very nice to do if you are asking me.
Its an easy way to make profit and also very nice because its without any risks.
It is easy but not that fast, consider the earnings bro, most of the signature campaign here does not offer big payment for a simple job, of course what can you expect, but somehow it could help you if you know how to manage your funds to maximize your income.
Payouts from signature campaigns are not too high at a moment and it can be considered as an method to earn them and once you have saved enough earnings then it can be used for trading which will eventually start growing your coins.