Sort issue... table in a proc

When I call:  select * from tblTarget Order By 1
(see http://sqlfiddle.com/#!3/e9a1d/1)  
Note: Table tblSource in this link is different than from the one used to produce the attached image. See T-SQL below for the new table definition.

I get the result in the attached image for:

create  TABLE tblSource(
f1 varchar(10)
,f2 varchar(10)
,f3 varchar(10)
,f4 varchar(10)
,f5 varchar(10)
)

create  TABLE tbltarget(
f1 varchar(10)
,f2 varchar(10)
,f3 varchar(10)
,f4 varchar(10)
,f5 varchar(10)
)
--select * from tblSource
insert into tblSource (f1, f2, f3, f4, f5)
values('C','R','Q','Z', 'W'),(NULL,'X',NULL,'GZ', 'HW'),('D',NULL,NULL,'CZ', 'MW'),(NULL,'P','P','IZ', 'UW'),(NULL,'UX',NULL,'GZ', NULL)

Select allOpen in new window

So, as you can see the results shown in the attached image doesn't sort well. I was thinking if  we could add a new sort column called f0 (int type no index) to tblTarget in the abcd stored procedure shown on the first link in this question, then we can have:

tblTarget
==========
f0    f1   f2    f3  ....
---   ----
0   <4>
0   <tbd>
1      A
2      B
.
.

Then we can sort in  by:
select * from tblTarget Order By f0

Question: How could this be coded?

Thank you.
tblTarget.png