Your have landed on the page for soloing with motifs. During all the years that I have studied (jazz)guitar I felt hindered by playing scales and arpeggios (I still use them sometimes). My receipe is very simple: study some classic, tradional motifs from the jazz language and apply them everywhere you can. Start with playing nothing more than these motifs as a practice routine on 1 song.
At first you will sound boring, because you are playing the same motifs over and over again. But hey, do you think you are improvising when playing all your best licks in a row? In time you get loose and let the motifs dance around. BECAUSE MOTIFS ARE SHORT LICKS WITH A STRONG MELODIC CONTOUR, THEY SOUND GOOD!
You ear will develop over time and will tell when and how to phrase a motif. Every time you throw in a motif you get more comfortable with them. In the end you don't rely on motifs anymore, because you are going to hear them coming in your head while the chords are passing by. Then you become a real soloist at last!
Play the minor motifs on any chord in C major that has the note 'F' in it. These chords act as a unresolved chord in C Major: F, Dm, G7, Bm7b5. These chords give your playing 'tension'.
Play the Major motifs on any chord in C that hasn't got the note F in it: C, Am and Em. The chords are resolved sounding chords and give your pleying a feel of 'rest'.
Here you'll find 4 outlined solos on Satin Doll in the style of Joe Pass. These are just studies of mine to get deeper into the tune. You won't here me playing these chorusses while I'm soloing on this standard!
Thes PDF's are somewhat larger to maintain printing quality. Have fun with it!