I have no idea how to use this mod, you need to make it more clear ,Help.

thx soo much bro

if u read the desc you will know how. :/
"This mod provides a config which lets you change the scale, attack strength, speed, jump height, and such of nearly any living entity in the game.
The mod will generate a full list of defaulted config values. This mod won't change anything by default, until you change the config.
minecraft { player { D:armor=0.0 D:damage=0.0625 D:health=0.5 D:jump=0.5 D:reach=0.0625 D:scale=0.0625 D:speed=0.25 D:toughness=0.0 } }
As an example, this config will put the player to the size of chisels-and-bits, including their jump height and speed. "

https://hastebin.com/oqihuredek.pl

edit the config. It's meant for packmakers.

How do i edit the config though?

I have the same problem. It keeps reverting to old settings in the client and there is no config file
When I open the mod file in notepad, it comes up as complete gibberish.
Sample:
PK��� �� ñ–™L � � META-INF/þÊ � PK��� ��� ñ–™L � META-INF/MANIFEST.MFóMÌËLK-.Ñ
K-*ÎÌϳR0Ô3àåróõqÎ/J
È)MÏÌsÎÏ+IÌÌ+�
úæ§X)”�•¦¢)±R(Ï,J-NMOÌÑ+ÉÈLNÖK,ÎÕ��±�Šx¹x¹ PK��Mã …Y p PK��� �� ñ–™L

oh
i found the config file. It's in config folder in .minecraft for anyone also having this problem

called thiccentities.cfg