This is a loaded question. The best thing you could do right now in my opinion is to record a 12 bar blues rhythm for about 4 or 5 minutes Play your pentatonic scale and try to feel out the chord changes. Dont be afraid to try anything. Practice this a lot and try to get a feel for it. I have said this a lot but the best thing you could do is to jam with someone close to your skill level and feed off of each other.

you are on the right track. learning to play a high level player's solos note for note is a good way to develop your intuitive understanding of how to put together your own solos. make sure that you really "know" the scales you know. The basic test is that if you know a scale, you can play it in any key, anywhere on the neck, without having to think about it, or hit any wrong notes. So can you play the pentatonic and blues scale, in any key, in any position on the neck? If not, then start working on it.

once you can play those two scales in all positions and keys from memory, start working on the major scale which is actually the main scale most soloists use the most. Keep listening and learning solos. Try to make your own solos, based on the solos you are listening to or learning. You don't absolutely need to know the theory behind the solos to create solos yourself, that sound similiar. But as you get more advanced, learning the theory behind the scales, chords, song forms, and improvisation in general will only help you make even stronger solos. The most important element is to practice it every single day, as much as you can. The second most important element is to have a clear objective with each practice session, for example, finish mastering one scale, or start memorizing another. Noodling around can actually help free your creativity up, but does little for your technique and theory. So try to mix it up --- 75% of your practice should be focusing on the development of technical skills, and theory (like scale patterns), and 25% noodling around, to keep fresh ideas and creativity flowing.

You need to think melodically. What you should try and do is play along with any recording and try and copy what the singer does.
Ideally, pick an old blues tune, where the vocal lines have a relatively limited range and note choice, and also where there are long gaps between the lines - so you can play a response to the vocal, using similar phrases. (This is where blues improvisation begins, and arguably where the whole concept of instrumental improvisation in jazz and rock began: responding to a singer.)

Think about LIMITING your choice of notes, and also about GROUPING them in phrases - no more than a bar or two in length, with a pause before the next phrase, as if you're taking a breath, or thinking what to say.
Don't be afraid of simplicity and repetition. If you find a good lick - repeat it, play around with it.

To start "getting it" when it comes to applying what you know about scales to soloing you need to start playing over some type of backing track. I suggest recording your own or using a looper to lay down a simple riff or three cord blues progression to solo over. Also, don't focus on trying to use every note in the scale when you are trying to understand soloing or creating a fixed solo. To begin, look at all of the notes of the scale on paper and pick out patterns using only some of the notes for your fingers to follow. An example would be the BB King box pattern. You can play any series of notes within the scale over your three chord progression as long as you are soloing in the right key. At some point the light will come on in your head and you seem to suddenly "get it".