There's a few basic foot shielder builds I'd recommend, the first:
Hard hitter:
24 Strength
15 Agility
8 Powerstrike
5 Shield
5 Athletics
5 extra (put into WM or IF)
111+ 1-hand
Decently survivable even without Ironflesh if you choose to go all WM, hits hard, low-medium movement speed.
Higher survival rate and damage:
21 Strength
15 Agility
7 Powerstrike
7 Ironflesh
5 Shield
5 Athletics
5 Weapon Master
146 1hand
You'll hit decently, be able to use almost all shields (no Steel, buddy), have some decent survival points with the Ironflesh. 5 Ath is a little low for my tastes so I'd probably go...
Positioning:
18 Strength
21 Agility
6 Powerstrike
7 Athletics
5 Shield
5 extra (Ironflesh, WM, more shield- your choice)
111+ 1-hand
The difference between 6 and 7 PS is pretty minimal for one-handed weapons; this one sacrifices the ability to take direct hits and some damage in exchange for movement speed and positioning opportunities.
Or the stand-by balanced build, neither suffering or excelling in all relevant areas:
18 Strength
18 Agility
5 Ironflesh
6 Powerstrike
6 Shield
6 Athletics
6 WM
154 1-hand