hello 

 

i have  database  which i created  extra  field  to  upload image  and  i need to show  one or two image in the   listing  but it showing  very  small .

This would need customized listing templates. The default template only uses this “forum mode” style that isn’t suitable for larger media. 

The above is correct. It may be worth looking in the marketplace for things like this, if its not something you are capable of yourself.