LOL... I tried to sort of explain this in another thread, but essentially the ONLY difference between the snake version of "dominant" is that it does not produce a super form (in other words, the homozygous-two copied, and heterozygou-one copied morphs look the exact same..

Treat it exactly like you would a co-dom, so for example a Pastel:

Pastel = P
Normal = N

PastelxNormal
N N
P PN PN
N NN NN

2=pastel
2=normal

PastelxPastel
P N
P PP PN
N NP NN

1=super pastel
2=pastel
1=Normal

super Pastelxnormal
N N
P PN PN
P PN PN

4=pastel

super Pastelxpastel
P N
P PP PN
P PP PN

2=Super pastel
2=pastel

super Pastelxsuper pastel
P P
P PP PP
P PP PP

4=Super pastel

The pinstripe punnets look the exact same, with one variation... The "PP" or homozygous expression looks the exact same visually as the het "PN/NP" expression.

Pin = P
Normal = N

PinxNormal
N N
P PN PN
N NN NN

2=Normal
2=pinstripe


PinxPin

P N
P PP PN
N NP NN

genetics:
1=Homo Pin (looks like pin)
2=pin
1=Normal
Looks:
3=pin
1=normal

Homozygous pin(looks like pin) x normal
N N
P PN PN
P PN PN

4=pinstripe.

Homozygous pin x Pin
P N
P PP PN
P PP PN

genetics:
2=homo pinstripe
2=pinstripe.
Looks:
4 pins.

Homozygous pin x homo Pin
P P
P PP PP
P PP PP

genetics:
4=homo pin
Looks:
4 pins.