sql count() from multiple tables

There are tables like these:

1. 
   

   pictures:

   
   

   
   wall_id|picture_id|user_id|likes
         1|         1|      1|    2
         1|         2|      1|    0
         2|         1|      1|    1
         2|         2|      2|    2
   
   

Pair (wall_id, picture_id) is unique

2. 
   

   likers:

   
   

   
   wall_id|picture_id|user_id
         1|         1|      3
         1|         1|      2
         2|         1|      2
         2|         2|      4
         2|         2|      3
   
   

I want to get something like that:

    user_id|pictures_count|likes_count|likers_count
          1|             3|          3|           2
          2|             1|          2|           2

I tried this:

select p.user_id as user_id, 
    count(p.user_id) as pictures_count, 
    sum(p.likes) as likes_count, 
    count(distinct l.user_id) as likers_count
 from pictures p
 left join likers l on p.wall_id = l.wall_id 
                       and p.picture_id = l.picture_id
 group by p.user_id

and

select pictures.user_id, count(pictures.user_id) as pictures_count,
     sum(pictures.likes) as likes_count, 
    count(distinct likers.user_id) as likers_count 
from pictures, likers 
where pictures.picture_id = likers.picture_id 
    and pictures.user_id = likers.user_id 
group by pictures.user_id

But I get such result:

    user_id|pictures_count|likes_count|likers_count
          1|             4|          6|           2
          2|             2|          4|           2

What should I do to get right result? Thanks.