大家好！ Please correct me!
1 我的衣服比你的漂亮。 My clothes are more beautiful than yours.
2 我踢足球踢得不比你踢得很好。 I play soccer worth than you.
3 我跑步跑得比你跑得块。I run faster than you.
4 我的朋友没有你大。 My friend is younger than you.I mean, I translate from english to chinese.

Question

大家好！  Please correct me!
1 我的衣服比你的漂亮。 My clothes are more beautiful than yours.
2 我踢足球踢得不比你踢得很好。 I play soccer worth than you.
3 我跑步跑得比你跑得块。I run faster than you.
4 我的朋友没有你大。 My friend is younger than you.I mean, I translate from english to chinese.

Answer

1 我的衣服比你的衣服漂亮。 My clothes are more beautiful than yours.
2 我踢足球没你好。 I play soccer worth than you.
3 我跑得比你快。I run faster than you.
4 我的朋友年纪没你大。／我的朋友比你年轻。 My friend is younger than you.

Answer

1. 我的衣服比你的更漂亮。 My clothes are more beautiful than yours.  
2 我的足球比你踢得好。 I play BETTER  soccer than you. 
3 我跑得比你快。I run faster than you.
4 我的朋友比你/少/年轻。 My friend is younger than you.

Answer

1. the first one is completely correct.
2.我踢足球踢的没你好。 you could say ''我踢足球踢的不比你踢的好.'' its just quite weird and awkwardly. 
3. 我跑步比你快。you don't need to repeat the active everytime
4. 我的朋友年龄比你小。 you could say 我的朋友比你大 after you talk with someone about age. just in a specific situation.

Answer

2.我足球踢的比你差3.我跑得比你快4.我朋友比你年輕or 我朋友年紀比你小
 It's more appropriate.

Answer

你好！Sergey ，

很高兴认识你！

具体修改如下：
1 我的衣服比你的漂亮。  （√）
2 我踢足球踢得不比你踢得很好。 （我踢足球比你踢得差远了。/我踢足球没有你踢得那么好。）
3 我跑步跑得比你跑得块。（我跑步比你跑得快。）
4 我的朋友没有你大。 （√）

As for your sentence ,I noticed that you don't have a question about basic comparative sentence,but if it is more complex,you seems a little bit confused.

Here is the pattern ,I hope that's helpful for you!

A + 比 (bı3)+ B + Adj. + 一点儿/得多/多了 (yì dianr3/de duo1/duo1 le)

Eg: 北京比广州冷得多。
       他的中文比我好一点儿。
       你踢足球（踢得）比我好多了。

Thanks!欢迎大家补充讨论！