When an idea for a very/chorus comes to my mind, this is usually my approach:
1. Record straight away on mobile phone
2.
Use my trusty old 4-track MBR (studio in a pocket) to jam it out with drums + extra guitar melodies + vocals. See how it sounds, change arrangements (in my head) then re-record on a new song, add lead sections, add extra vocals. Keep creating anew and re-recording until it takes a proper shape. Song is now 90% written. Try and solidify all the vocal melodies and guitar riffs as much as possible. Impro guitar leads and decide on a definite lead structure so to cut down on wated messing later on. Experiment with different guitar layers, and lead sounds. Note: this can all be done very quickly, and easily on the MBR, and you can fit this thing in your pocket
3. Pre-production (give yourself plenty of time for this stage!!): mess around with DAW. Take a few weeks to get away from songwriting, and just look into the technologies, software synths, revalver tones, impulses. Lots of messing around/research, tone tests + post on the Sneap forum to get tips on my tone, and readjust where necessary. Get correct drum tones and best drum software. Learn how to use everything, familiarise with various software. Read tips on forums. Learn more about EQ and mixing. Read, read, read. Cut down on wasted time later on.
4. Only at this stage will I go to my DAW to actually do the song for real. When on my DAW I will do drums, then guitars, then bass, then keys. Go to a proper studio for vocals and mastering+help with mix. Tweak guitar tone and drum tone/production as I go depending on how it sounds in the mix. Small song arrangement changes and creative ideas are still allowed, and changes may occur on some of the melodies.
This is just my own way of doing it, and I'm not very experienced but I try and schedule a place and time for everything (has anyone read the post by "yep" on the reaper forum?