http://204.196.54.50/spel/monofon-chart.htm
Pictographic Monofon characters in teal-blue (below)
The PMF shapes for consonants are historical and pictographic.  Some are Roman: some pre-roman.
b=boot, <=corner, >=goad, d=digit,  f=flag,  h=hurdle, horse,  j=jump, l=lever, m=mountain, n=nob, p=pipe, r=runners leg, s=snake, t=tip, v=valley, w=wave, y=yard arm, z=zeus throwing lightning bolt.
The shapes for Dh and Th look like the Runic letters eth and thorn.

The shapes for the vowels are more analytical with similar shapes representing similar sounds. However, some vowel shapes resemble objects.  For example,  e=elbow and it looks like a bent arm.  ^=ax and it looks something like an ax. ah=ox horns.   o'=oat grain.  -- = eel, The turned c (awe) is simply a+o and has no iconic interpretation.


Earlier version below:

There are 12 pure vowels, 6 short and 6 long.  Diphthongs or blends are long and are often referred to as long vowels.  Above the vowels are arranged in the traditional alphabetic AEIOU order [ei, i:, ai, ou, ju]. Only one of these so called long vowels is not a diphthong. 

The pure or uncombined long (or free) vowels are a: 3: i: o: u:  [In MenuSpel these phonemes would be spelled ah, er, ee, awe, oo] MenuSpel is often used to translate foreign dishes on restaurant menus.  It is an awkward notation to use for running text but it is usually unambiguous. 

Spanglish is uncertain about the representation of /au/. ou [awe+oo] is close enough for understandable pronunciation. While it is not the most frequent pronunciation it corresponds with the familiar TO digraph. 

Transcribed English speech using an augmented spanish orthography

This chart is from the Unigraf proposal for a quickly written monoline phonetic script called Monofon.
Monofon is an augmented roman script that has much in common with Shavian, an intentionally non-roman script. 

The chief problem with Shavian is that too much effort is required to learn the code.  Except for 6 characters [o, i, s, z, t, k(c)] that resemble their roman counterparts, Shavian cannot be read or written without a key.  Similar sounds have to some extend similar shapes in different rotations but this is the only built in memory aid.  Because of the sound pairints, Shavian could probably be learned faster than the Roman alphabaet but few want to spend the time required to master a new code.

Monofon borrow the single curved stroke for the pure checked vowels eh, ih, ah, uh.  ah and eh are combined to represent [ae] the vowel in at.  An extended e which stops short of a complete U is used to represent the short vowel in hook /u/.  The dash - is used to represent the long I and can be 

i=ee, - = ih.      h-t the bol with the baet.  He bit h-z waif and shi b-t him